JacksonAnnotationIntrospector
Date: 2016-12-04

com.fasterxml.jackson.databind.introspect

## Class JacksonAnnotationIntrospector

- java.lang.Object
- - com.fasterxml.jackson.databind.AnnotationIntrospector
  - - com.fasterxml.jackson.databind.introspect.JacksonAnnotationIntrospector

- All Implemented Interfaces:
    com.fasterxml.jackson.core.Versioned, java.io.Serializable

      public class JacksonAnnotationIntrospector
      extends AnnotationIntrospector
      implements java.io.Serializable

  `AnnotationIntrospector` implementation that handles standard Jackson annotations.
  See Also:
    Serialized Form

- - ### Nested Class Summary

    - ### Nested classes/interfaces inherited from class com.fasterxml.jackson.databind.AnnotationIntrospector

      `AnnotationIntrospector.ReferenceProperty`

  - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `protected LRUMap<java.lang.Class<?>,java.lang.Boolean>` | `_annotationsInside` Since introspection of annotation types is a performance issue in some use cases (rare, but do exist), let's try a simple cache to reduce need for actual meta-annotation introspection.
    `protected boolean` | `_cfgConstructorPropertiesImpliesCreator` See `setConstructorPropertiesImpliesCreator(boolean)` for explanation.

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `JacksonAnnotationIntrospector()`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `protected java.lang.Class<?>` | `_classIfExplicit(java.lang.Class<?> cls)`
    `protected java.lang.Class<?>` | `_classIfExplicit(java.lang.Class<?> cls, java.lang.Class<?> implicit)`
    `protected StdTypeResolverBuilder` | `_constructNoTypeResolverBuilder()` Helper method for dealing with "no type info" marker; can't be null (as it'd be replaced by default typing)
    `protected StdTypeResolverBuilder` | `_constructStdTypeResolverBuilder()` Helper method for constructing standard `TypeResolverBuilder` implementation.
    `protected BeanPropertyWriter` | `_constructVirtualProperty(JsonAppend.Attr attr, MapperConfig<?> config, AnnotatedClass ac, JavaType type)`
    `protected BeanPropertyWriter` | `_constructVirtualProperty(JsonAppend.Prop prop, MapperConfig<?> config, AnnotatedClass ac)`
    `protected PropertyName` | `_findConstructorName(Annotated a)`
    `protected TypeResolverBuilder<?>` | `_findTypeResolver(MapperConfig<?> config, Annotated ann, JavaType baseType)` Helper method called to construct and initialize instance of `TypeResolverBuilder` if given annotated element indicates one is needed.
    `protected boolean` | `_isIgnorable(Annotated a)`
    `protected PropertyName` | `_propertyName(java.lang.String localName, java.lang.String namespace)`
    `void` | `findAndAddVirtualProperties(MapperConfig<?> config, AnnotatedClass ac, java.util.List<BeanPropertyWriter> properties)` Method for adding possible virtual properties to be serialized along with regular properties.
    `VisibilityChecker<?>` | `findAutoDetectVisibility(AnnotatedClass ac, VisibilityChecker<?> checker)` Method for checking if annotations indicate changes to minimum visibility levels needed for auto-detecting property elements (fields, methods, constructors).
    `java.lang.String` | `findClassDescription(AnnotatedClass ac)` Method used to check whether specified class defines a human-readable description to use for documentation.
    `java.lang.Object` | `findContentDeserializer(Annotated a)` Method for getting a deserializer definition for content (values) of associated `Collection`, `array` or `Map` property.
    `java.lang.Object` | `findContentSerializer(Annotated a)` Method for getting a serializer definition for content (values) of associated `Collection`, `array` or `Map` property.
    `com.fasterxml.jackson.annotation.JsonCreator.Mode` | `findCreatorBinding(Annotated a)` Method for finding indication of creator binding mode for a creator (something for which `AnnotationIntrospector.hasCreatorAnnotation(com.fasterxml.jackson.databind.introspect.Annotated)` returns true), for cases where there may be ambiguity (currently: single-argument creator with implicit but no explicit name for the argument).
    `java.lang.Enum<?>` | `findDefaultEnumValue(java.lang.Class<java.lang.Enum<?>> enumCls)` Finds the Enum value that should be considered the default value, if possible.
    `java.lang.Object` | `findDeserializationContentConverter(AnnotatedMember a)` Method for finding `Converter` that annotated property has indicated needs to be used for values of container type (this also means that method should only be called for properties of container types, List/Map/array properties).
    `java.lang.Class<?>` | `findDeserializationContentType(Annotated am, JavaType baseContentType)` Deprecated.
    `java.lang.Object` | `findDeserializationConverter(Annotated a)` Method for finding `Converter` that annotated entity (property or class) has indicated to be used as part of deserialization.
    `java.lang.Class<?>` | `findDeserializationKeyType(Annotated am, JavaType baseKeyType)` Deprecated.
    `java.lang.Class<?>` | `findDeserializationType(Annotated am, JavaType baseType)` Deprecated.
    `java.lang.Object` | `findDeserializer(Annotated a)` Method for getting a deserializer definition on specified method or field.
    `java.lang.String` | `findEnumValue(java.lang.Enum<?> value)` Deprecated.
    `java.lang.String[]` | `findEnumValues(java.lang.Class<?> enumType, java.lang.Enum<?>[] enumValues, java.lang.String[] names)` Method for efficiently figuring out which if given set of `Enum` values have explicitly defined name.
    `java.lang.Object` | `findFilterId(Annotated a)` Method for finding if annotated class has associated filter; and if so, to return id that is used to locate filter.
    `com.fasterxml.jackson.annotation.JsonFormat.Value` | `findFormat(Annotated ann)` Method for finding format annotations for property or class.
    `java.lang.Boolean` | `findIgnoreUnknownProperties(AnnotatedClass a)` Deprecated.
    `java.lang.String` | `findImplicitPropertyName(AnnotatedMember m)` Method for finding implicit name for a property that given annotated member (field, method, creator parameter) may represent.
    `java.lang.Object` | `findInjectableValueId(AnnotatedMember m)` Method called to find out whether given member expectes a value to be injected, and if so, what is the identifier of the value to use during injection.
    `java.lang.Object` | `findKeyDeserializer(Annotated a)` Method for getting a deserializer definition for keys of associated `Map` property.
    `java.lang.Object` | `findKeySerializer(Annotated a)` Method for getting a serializer definition for keys of associated `Map` property.
    `PropertyName` | `findNameForDeserialization(Annotated a)` Method for checking whether given property accessors (method, field) has an annotation that suggests property name to use for deserialization (reading JSON into POJOs).
    `PropertyName` | `findNameForSerialization(Annotated a)` Method for checking whether given property accessors (method, field) has an annotation that suggests property name to use for serialization.
    `java.lang.Object` | `findNamingStrategy(AnnotatedClass ac)` Method for finding `PropertyNamingStrategy` for given class, if any specified by annotations; and if so, either return a `PropertyNamingStrategy` instance, or Class to use for creating instance
    `java.lang.Object` | `findNullSerializer(Annotated a)` Method for getting a serializer definition for serializer to use for nulls (null values) of associated property or type.
    `ObjectIdInfo` | `findObjectIdInfo(Annotated ann)` Method for checking whether given annotated thing (type, or accessor) indicates that values referenced (values of type of annotated class, or values referenced by annotated property; latter having precedence) should include Object Identifier, and if so, specify details of Object Identity used.
    `ObjectIdInfo` | `findObjectReferenceInfo(Annotated ann, ObjectIdInfo objectIdInfo)` Method for figuring out additional properties of an Object Identity reference
    `java.lang.Class<?>` | `findPOJOBuilder(AnnotatedClass ac)` Method for finding Builder object to use for constructing value instance and binding data (sort of combining value instantiators that can construct, and deserializers that can bind data).
    `JsonPOJOBuilder.Value` | `findPOJOBuilderConfig(AnnotatedClass ac)`
    `java.lang.String[]` | `findPropertiesToIgnore(Annotated a, boolean forSerialization)` Deprecated.
    `com.fasterxml.jackson.annotation.JsonProperty.Access` | `findPropertyAccess(Annotated m)` Method for finding optional access definition for a property, annotated on one of its accessors.
    `TypeResolverBuilder<?>` | `findPropertyContentTypeResolver(MapperConfig<?> config, AnnotatedMember am, JavaType containerType)` Method for checking if given structured property entity (field or method that has nominal value of Map, Collection or array type) has annotations that indicate that specific type resolver is to be used for handling type information of contained values.
    `java.lang.String` | `findPropertyDefaultValue(Annotated ann)` Method for finding suggested default value (as simple textual serialization) for the property.
    `java.lang.String` | `findPropertyDescription(Annotated ann)` Method used to check whether specified property member (accessor or mutator) defines human-readable description to use for documentation.
    `com.fasterxml.jackson.annotation.JsonIgnoreProperties.Value` | `findPropertyIgnorals(Annotated a)` Method for finding information about properties to ignore either by name, or by more general specification ("ignore all unknown").
    `com.fasterxml.jackson.annotation.JsonInclude.Value` | `findPropertyInclusion(Annotated a)` Method for checking inclusion criteria for a type (Class) or property (yes, method name is bit unfortunate -- not just for properties!).
    `java.lang.Integer` | `findPropertyIndex(Annotated ann)` Method used to check whether specified property member (accessor or mutator) defines numeric index, and if so, what is the index value.
    `TypeResolverBuilder<?>` | `findPropertyTypeResolver(MapperConfig<?> config, AnnotatedMember am, JavaType baseType)` Method for checking if given property entity (field or method) has annotations that indicate that specific type resolver is to be used for handling instances.
    `AnnotationIntrospector.ReferenceProperty` | `findReferenceType(AnnotatedMember member)` Method for checking if given member indicates that it is part of a reference (parent/child).
    `PropertyName` | `findRootName(AnnotatedClass ac)` Method for locating name used as "root name" (for use by some serializers when outputting root-level object -- mostly for XML compatibility purposes) for given class, if one is defined.
    `java.lang.Object` | `findSerializationContentConverter(AnnotatedMember a)` Method for finding `Converter` that annotated property has indicated needs to be used for values of container type (this also means that method should only be called for properties of container types, List/Map/array properties).
    `java.lang.Class<?>` | `findSerializationContentType(Annotated am, JavaType baseType)` Deprecated.
    `java.lang.Object` | `findSerializationConverter(Annotated a)` Method for finding `Converter` that annotated entity (property or class) has indicated to be used as part of serialization.
    `com.fasterxml.jackson.annotation.JsonInclude.Include` | `findSerializationInclusion(Annotated a, com.fasterxml.jackson.annotation.JsonInclude.Include defValue)` Method for checking whether given annotated entity (class, method, field) defines which Bean/Map properties are to be included in serialization.
    `com.fasterxml.jackson.annotation.JsonInclude.Include` | `findSerializationInclusionForContent(Annotated a, com.fasterxml.jackson.annotation.JsonInclude.Include defValue)` Deprecated.
    `java.lang.Class<?>` | `findSerializationKeyType(Annotated am, JavaType baseType)` Deprecated.
    `java.lang.String[]` | `findSerializationPropertyOrder(AnnotatedClass ac)` Method for accessing defined property serialization order (which may be partial).
    `java.lang.Boolean` | `findSerializationSortAlphabetically(Annotated ann)` Method for checking whether an annotation indicates that serialized properties for which no explicit is defined should be alphabetically (lexicograpically) ordered
    `java.lang.Class<?>` | `findSerializationType(Annotated am)` Deprecated.
    `JsonSerialize.Typing` | `findSerializationTyping(Annotated a)` Method for accessing declared typing mode annotated (if any).
    `java.lang.Object` | `findSerializer(Annotated a)` Method for getting a serializer definition on specified method or field.
    `java.util.List<NamedType>` | `findSubtypes(Annotated a)` Method for locating annotation-specified subtypes related to annotated entity (class, method, field).
    `java.lang.String` | `findTypeName(AnnotatedClass ac)` Method for checking if specified type has explicit name.
    `TypeResolverBuilder<?>` | `findTypeResolver(MapperConfig<?> config, AnnotatedClass ac, JavaType baseType)` Method for checking if given class has annotations that indicate that specific type resolver is to be used for handling instances.
    `NameTransformer` | `findUnwrappingNameTransformer(AnnotatedMember member)` Method called to check whether given property is marked to be "unwrapped" when being serialized (and appropriately handled in reverse direction, i.e.
    `java.lang.Object` | `findValueInstantiator(AnnotatedClass ac)` Method getting `ValueInstantiator` to use for given type (class): return value can either be an instance of instantiator, or class of instantiator to create.
    `java.lang.Class<?>[]` | `findViews(Annotated a)` Method for checking if annotated property (represented by a field or getter/setter method) has definitions for views it is to be included in.
    `boolean` | `hasAnyGetterAnnotation(AnnotatedMethod am)` Method for checking whether given method has an annotation that suggests that the method is to serve as "any setter"; method to be used for accessing set of miscellaneous "extra" properties, often bound with matching "any setter" method.
    `boolean` | `hasAnySetterAnnotation(AnnotatedMethod am)` Method for checking whether given method has an annotation that suggests that the method is to serve as "any setter"; method to be used for setting values of any properties for which no dedicated setter method is found.
    `boolean` | `hasAsValueAnnotation(AnnotatedMethod am)` Method for checking whether given method has an annotation that suggests that the return value of annotated method should be used as "the value" of the object instance; usually serialized as a primitive value such as String or number.
    `boolean` | `hasCreatorAnnotation(Annotated a)` Method for checking whether given annotated item (method, constructor) has an annotation that suggests that the method is a "creator" (aka factory) method to be used for construct new instances of deserialized values.
    `boolean` | `hasIgnoreMarker(AnnotatedMember m)` Method called to check whether given property is marked to be ignored.
    `java.lang.Boolean` | `hasRequiredMarker(AnnotatedMember m)` Method that can be called to check whether this member has an annotation that suggests whether value for matching property is required or not.
    `boolean` | `isAnnotationBundle(java.lang.annotation.Annotation ann)` Annotations with meta-annotation `JacksonAnnotationsInside` are considered bundles.
    `java.lang.Boolean` | `isIgnorableType(AnnotatedClass ac)` Method for checking whether properties that have specified type (class, not generics aware) should be completely ignored for serialization and deserialization purposes.
    `java.lang.Boolean` | `isTypeId(AnnotatedMember member)` Method for checking whether given accessor claims to represent type id: if so, its value may be used as an override, instead of generated type id.
    `protected java.lang.Object` | `readResolve()`
    `AnnotatedMethod` | `resolveSetterConflict(MapperConfig<?> config, AnnotatedMethod setter1, AnnotatedMethod setter2)` Method called in cases where a class has two methods eligible to be used for the same logical property, and default logic is not enough to figure out clear precedence.
    `JacksonAnnotationIntrospector` | `setConstructorPropertiesImpliesCreator(boolean b)` Method for changing behavior of `ConstructorProperties`: if set to `true`, existence DOES indicate that the given constructor should be considered a creator; `false` that it should NOT be considered a creator without explicit use of `JsonCreator` annotation.
    `com.fasterxml.jackson.core.Version` | `version()`

    - ### Methods inherited from class com.fasterxml.jackson.databind.AnnotationIntrospector

      `_findAnnotation, _hasAnnotation, _hasOneOf, allIntrospectors, allIntrospectors, findPropertiesToIgnore, findWrapperName, nopInstance, pair, refineDeserializationType, refineSerializationType`

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Field Detail

    - #### _annotationsInside

          protected transient LRUMap<java.lang.Class<?>,java.lang.Boolean> _annotationsInside

      Since introspection of annotation types is a performance issue in some use cases (rare, but do exist), let's try a simple cache to reduce need for actual meta-annotation introspection.

      Non-final only because it needs to be re-created after deserialization.

      Since:
        2.7

    - #### _cfgConstructorPropertiesImpliesCreator

          protected boolean _cfgConstructorPropertiesImpliesCreator

      See `setConstructorPropertiesImpliesCreator(boolean)` for explanation.

      Defaults to true.

      Since:
        2.7.4

  - ### Constructor Detail

    - #### JacksonAnnotationIntrospector

          public JacksonAnnotationIntrospector()

  - ### Method Detail

    - #### version

          public com.fasterxml.jackson.core.Version version()

      Specified by:
        `version` in interface `com.fasterxml.jackson.core.Versioned`
      Specified by:
        `version` in class `AnnotationIntrospector`

    - #### readResolve

          protected java.lang.Object readResolve()

    - #### setConstructorPropertiesImpliesCreator

          public JacksonAnnotationIntrospector setConstructorPropertiesImpliesCreator(boolean b)

      Method for changing behavior of `ConstructorProperties`: if set to `true`, existence DOES indicate that the given constructor should be considered a creator; `false` that it should NOT be considered a creator without explicit use of `JsonCreator` annotation.

      Default setting is `true`

      Since:
        2.7.4

    - #### isAnnotationBundle

          public boolean isAnnotationBundle(java.lang.annotation.Annotation ann)

      Annotations with meta-annotation `JacksonAnnotationsInside` are considered bundles.
      Overrides:
        `isAnnotationBundle` in class `AnnotationIntrospector`

    - #### findEnumValue

          @Deprecated
          public java.lang.String findEnumValue(java.lang.Enum<?> value)

      Deprecated.
      Since 2.6, we have supported use of `JsonProperty` for specifying explicit serialized name
      Overrides:
        `findEnumValue` in class `AnnotationIntrospector`
      Returns:
        Serialized enum value.

    - #### findEnumValues

          public java.lang.String[] findEnumValues(java.lang.Class<?> enumType,
                                          java.lang.Enum<?>[] enumValues,
                                          java.lang.String[] names)

      Description copied from class: `AnnotationIntrospector`
      Method for efficiently figuring out which if given set of `Enum` values have explicitly defined name. Method will overwrite entries in incoming `names` array with explicit names found, if any, leaving other entries unmodified.

      Default implementation will simply delegate to `AnnotationIntrospector.findEnumValue(java.lang.Enum<?>)`, which is close enough, although unfortunately NOT 100% equivalent (as it will also consider `name()` to give explicit value).

      Overrides:
        `findEnumValues` in class `AnnotationIntrospector`

    - #### findDefaultEnumValue

          public java.lang.Enum<?> findDefaultEnumValue(java.lang.Class<java.lang.Enum<?>> enumCls)

      Finds the Enum value that should be considered the default value, if possible.

      This implementation relies on `JsonEnumDefaultValue` annotation to determine the default value if present.

      Overrides:
        `findDefaultEnumValue` in class `AnnotationIntrospector`
      Parameters:
        `enumCls` - The Enum class to scan for the default value.
      Returns:
        null if none found or it's not possible to determine one.
      Since:
        2.8

    - #### findRootName

          public PropertyName findRootName(AnnotatedClass ac)

      Description copied from class: `AnnotationIntrospector`
      Method for locating name used as "root name" (for use by some serializers when outputting root-level object -- mostly for XML compatibility purposes) for given class, if one is defined. Returns null if no declaration found; can return explicit empty String, which is usually ignored as well as null.

      NOTE: method signature changed in 2.1, to return `PropertyName` instead of String.

      Overrides:
        `findRootName` in class `AnnotationIntrospector`

    - #### findPropertyIgnorals

          public com.fasterxml.jackson.annotation.JsonIgnoreProperties.Value findPropertyIgnorals(Annotated a)

      Description copied from class: `AnnotationIntrospector`
      Method for finding information about properties to ignore either by name, or by more general specification ("ignore all unknown"). This method combines multiple aspects of ignorals and deprecates earlier methods such as `AnnotationIntrospector.findPropertiesToIgnore(Annotated, boolean)` and `AnnotationIntrospector.findIgnoreUnknownProperties(AnnotatedClass)`.
      Overrides:
        `findPropertyIgnorals` in class `AnnotationIntrospector`

    - #### findPropertiesToIgnore

          @Deprecated
          public java.lang.String[] findPropertiesToIgnore(Annotated a,
                                                             boolean forSerialization)

      Deprecated.
      Overrides:
        `findPropertiesToIgnore` in class `AnnotationIntrospector`
        `forSerialization` - True if requesting properties to ignore for serialization; false if for deserialization

    - #### findIgnoreUnknownProperties

          @Deprecated
          public java.lang.Boolean findIgnoreUnknownProperties(AnnotatedClass a)

      Deprecated.
      Description copied from class: `AnnotationIntrospector`
      Method for checking whether an annotation indicates that all unknown properties
      Overrides:
        `findIgnoreUnknownProperties` in class `AnnotationIntrospector`

    - #### isIgnorableType

          public java.lang.Boolean isIgnorableType(AnnotatedClass ac)

      Description copied from class: `AnnotationIntrospector`
      Method for checking whether properties that have specified type (class, not generics aware) should be completely ignored for serialization and deserialization purposes.
      Overrides:
        `isIgnorableType` in class `AnnotationIntrospector`
      Parameters:
        `ac` - Type to check
      Returns:
        Boolean.TRUE if properties of type should be ignored; Boolean.FALSE if they are not to be ignored, null for default handling (which is 'do not ignore')

    - #### findFilterId

          public java.lang.Object findFilterId(Annotated a)

      Description copied from class: `AnnotationIntrospector`
      Method for finding if annotated class has associated filter; and if so, to return id that is used to locate filter.
      Overrides:
        `findFilterId` in class `AnnotationIntrospector`
      Returns:
        Id of the filter to use for filtering properties of annotated class, if any; or null if none found.

    - #### findNamingStrategy

          public java.lang.Object findNamingStrategy(AnnotatedClass ac)

      Description copied from class: `AnnotationIntrospector`
      Method for finding `PropertyNamingStrategy` for given class, if any specified by annotations; and if so, either return a `PropertyNamingStrategy` instance, or Class to use for creating instance
      Overrides:
        `findNamingStrategy` in class `AnnotationIntrospector`
      Returns:
        Sub-class or instance of `PropertyNamingStrategy`, if one is specified for given class; null if not.

    - #### findClassDescription

          public java.lang.String findClassDescription(AnnotatedClass ac)

      Description copied from class: `AnnotationIntrospector`
      Method used to check whether specified class defines a human-readable description to use for documentation. There are no further definitions for contents; for example, whether these may be marked up using HTML (or something like wiki format like Markup) is not defined.
      Overrides:
        `findClassDescription` in class `AnnotationIntrospector`
      Returns:
        Human-readable description, if any.

    - #### findAutoDetectVisibility

          public VisibilityChecker<?> findAutoDetectVisibility(AnnotatedClass ac,
                                                      VisibilityChecker<?> checker)

      Description copied from class: `AnnotationIntrospector`
      Method for checking if annotations indicate changes to minimum visibility levels needed for auto-detecting property elements (fields, methods, constructors). A baseline checker is given, and introspector is to either return it as is (if no annotations are found), or build and return a derived instance (using checker's build methods).
      Overrides:
        `findAutoDetectVisibility` in class `AnnotationIntrospector`

    - #### findImplicitPropertyName

          public java.lang.String findImplicitPropertyName(AnnotatedMember m)

      Description copied from class: `AnnotationIntrospector`
      Method for finding implicit name for a property that given annotated member (field, method, creator parameter) may represent. This is different from explicit, annotation-based property name, in that it is "weak" and does not either proof that a property exists (for example, if visibility is not high enough), or override explicit names. In practice this method is used to introspect optional names for creator parameters (which may or may not be available and can not be detected by standard databind); or to provide alternate name mangling for fields, getters and/or setters.
      Overrides:
        `findImplicitPropertyName` in class `AnnotationIntrospector`

    - #### hasIgnoreMarker

          public boolean hasIgnoreMarker(AnnotatedMember m)

      Description copied from class: `AnnotationIntrospector`
      Method called to check whether given property is marked to be ignored. This is used to determine whether to ignore properties, on per-property basis, usually combining annotations from multiple accessors (getters, setters, fields, constructor parameters).
      Overrides:
        `hasIgnoreMarker` in class `AnnotationIntrospector`

    - #### hasRequiredMarker

          public java.lang.Boolean hasRequiredMarker(AnnotatedMember m)

      Description copied from class: `AnnotationIntrospector`
      Method that can be called to check whether this member has an annotation that suggests whether value for matching property is required or not.
      Overrides:
        `hasRequiredMarker` in class `AnnotationIntrospector`

    - #### findPropertyAccess

          public com.fasterxml.jackson.annotation.JsonProperty.Access findPropertyAccess(Annotated m)

      Description copied from class: `AnnotationIntrospector`
      Method for finding optional access definition for a property, annotated on one of its accessors. If a definition for read-only, write-only or read-write cases, visibility rules may be modified. Note, however, that even more specific annotations (like one for ignoring specific accessor) may further override behavior of the access definition.
      Overrides:
        `findPropertyAccess` in class `AnnotationIntrospector`

    - #### findPropertyDescription

          public java.lang.String findPropertyDescription(Annotated ann)

      Description copied from class: `AnnotationIntrospector`
      Method used to check whether specified property member (accessor or mutator) defines human-readable description to use for documentation. There are no further definitions for contents; for example, whether these may be marked up using HTML is not defined.
      Overrides:
        `findPropertyDescription` in class `AnnotationIntrospector`
      Returns:
        Human-readable description, if any.

    - #### findPropertyIndex

          public java.lang.Integer findPropertyIndex(Annotated ann)

      Description copied from class: `AnnotationIntrospector`
      Method used to check whether specified property member (accessor or mutator) defines numeric index, and if so, what is the index value. Possible use cases for index values included use by underlying data format (some binary formats mandate use of index instead of name) and ordering of properties (for documentation, or during serialization).
      Overrides:
        `findPropertyIndex` in class `AnnotationIntrospector`
      Returns:
        Explicitly specified index for the property, if any

    - #### findPropertyDefaultValue

          public java.lang.String findPropertyDefaultValue(Annotated ann)

      Description copied from class: `AnnotationIntrospector`
      Method for finding suggested default value (as simple textual serialization) for the property. While core databind does not make any use of it, it is exposed for extension modules to use: an expected use is generation of schema representations and documentation.
      Overrides:
        `findPropertyDefaultValue` in class `AnnotationIntrospector`

    - #### findFormat

          public com.fasterxml.jackson.annotation.JsonFormat.Value findFormat(Annotated ann)

      Description copied from class: `AnnotationIntrospector`
      Method for finding format annotations for property or class. Return value is typically used by serializers and/or deserializers to customize presentation aspects of the serialized value.
      Overrides:
        `findFormat` in class `AnnotationIntrospector`

    - #### findReferenceType

          public AnnotationIntrospector.ReferenceProperty findReferenceType(AnnotatedMember member)

      Description copied from class: `AnnotationIntrospector`
      Method for checking if given member indicates that it is part of a reference (parent/child).
      Overrides:
        `findReferenceType` in class `AnnotationIntrospector`

    - #### findUnwrappingNameTransformer

          public NameTransformer findUnwrappingNameTransformer(AnnotatedMember member)

      Description copied from class: `AnnotationIntrospector`
      Method called to check whether given property is marked to be "unwrapped" when being serialized (and appropriately handled in reverse direction, i.e. expect unwrapped representation during deserialization). Return value is the name transformation to use, if wrapping/unwrapping should be done, or null if not -- note that transformation may simply be identity transformation (no changes).
      Overrides:
        `findUnwrappingNameTransformer` in class `AnnotationIntrospector`

    - #### findInjectableValueId

          public java.lang.Object findInjectableValueId(AnnotatedMember m)

      Description copied from class: `AnnotationIntrospector`
      Method called to find out whether given member expectes a value to be injected, and if so, what is the identifier of the value to use during injection. Type if identifier needs to be compatible with provider of values (of type `InjectableValues`); often a simple String id is used.
      Overrides:
        `findInjectableValueId` in class `AnnotationIntrospector`
      Parameters:
        `m` - Member to check
      Returns:
        Identifier of value to inject, if any; null if no injection indicator is found

    - #### findViews

          public java.lang.Class<?>[] findViews(Annotated a)

      Description copied from class: `AnnotationIntrospector`
      Method for checking if annotated property (represented by a field or getter/setter method) has definitions for views it is to be included in. If null is returned, no view definitions exist and property is always included (or always excluded as per default view inclusion configuration); otherwise it will only be included for views included in returned array. View matches are checked using class inheritance rules (sub-classes inherit inclusions of super-classes)
      Overrides:
        `findViews` in class `AnnotationIntrospector`
      Parameters:
        `a` - Annotated property (represented by a method, field or ctor parameter)
      Returns:
        Array of views (represented by classes) that the property is included in; if null, always included (same as returning array containing `Object.class`)

    - #### resolveSetterConflict

          public AnnotatedMethod resolveSetterConflict(MapperConfig<?> config,
                                              AnnotatedMethod setter1,
                                              AnnotatedMethod setter2)

      Description copied from class: `AnnotationIntrospector`
      Method called in cases where a class has two methods eligible to be used for the same logical property, and default logic is not enough to figure out clear precedence. Introspector may try to choose one to use; or, if unable, return `null` to indicate it can not resolve the problem.
      Overrides:
        `resolveSetterConflict` in class `AnnotationIntrospector`

    - #### findTypeResolver

          public TypeResolverBuilder<?> findTypeResolver(MapperConfig<?> config,
                                                AnnotatedClass ac,
                                                JavaType baseType)

      Description copied from class: `AnnotationIntrospector`
      Method for checking if given class has annotations that indicate that specific type resolver is to be used for handling instances. This includes not only instantiating resolver builder, but also configuring it based on relevant annotations (not including ones checked with a call to `AnnotationIntrospector.findSubtypes(com.fasterxml.jackson.databind.introspect.Annotated)`
      Overrides:
        `findTypeResolver` in class `AnnotationIntrospector`
      Parameters:
        `config` - Configuration settings in effect (for serialization or deserialization)
        `ac` - Annotated class to check for annotations
        `baseType` - Base java type of value for which resolver is to be found
      Returns:
        Type resolver builder for given type, if one found; null if none

    - #### findPropertyTypeResolver

          public TypeResolverBuilder<?> findPropertyTypeResolver(MapperConfig<?> config,
                                                        AnnotatedMember am,
                                                        JavaType baseType)

      Description copied from class: `AnnotationIntrospector`
      Method for checking if given property entity (field or method) has annotations that indicate that specific type resolver is to be used for handling instances. This includes not only instantiating resolver builder, but also configuring it based on relevant annotations (not including ones checked with a call to `AnnotationIntrospector.findSubtypes(com.fasterxml.jackson.databind.introspect.Annotated)`
      Overrides:
        `findPropertyTypeResolver` in class `AnnotationIntrospector`
      Parameters:
        `config` - Configuration settings in effect (for serialization or deserialization)
        `am` - Annotated member (field or method) to check for annotations
        `baseType` - Base java type of property for which resolver is to be found
      Returns:
        Type resolver builder for properties of given entity, if one found; null if none

    - #### findPropertyContentTypeResolver

          public TypeResolverBuilder<?> findPropertyContentTypeResolver(MapperConfig<?> config,
                                                               AnnotatedMember am,
                                                               JavaType containerType)

      Description copied from class: `AnnotationIntrospector`
      Method for checking if given structured property entity (field or method that has nominal value of Map, Collection or array type) has annotations that indicate that specific type resolver is to be used for handling type information of contained values. This includes not only instantiating resolver builder, but also configuring it based on relevant annotations (not including ones checked with a call to `AnnotationIntrospector.findSubtypes(com.fasterxml.jackson.databind.introspect.Annotated)`
      Overrides:
        `findPropertyContentTypeResolver` in class `AnnotationIntrospector`
      Parameters:
        `config` - Configuration settings in effect (for serialization or deserialization)
        `am` - Annotated member (field or method) to check for annotations
        `containerType` - Type of property for which resolver is to be found (must be a container type)
      Returns:
        Type resolver builder for values contained in properties of given entity, if one found; null if none

    - #### findSubtypes

          public java.util.List<NamedType> findSubtypes(Annotated a)

      Description copied from class: `AnnotationIntrospector`
      Method for locating annotation-specified subtypes related to annotated entity (class, method, field). Note that this is only guaranteed to be a list of directly declared subtypes, no recursive processing is guarantees (i.e. caller has to do it if/as necessary)
      Overrides:
        `findSubtypes` in class `AnnotationIntrospector`
      Parameters:
        `a` - Annotated entity (class, field/method) to check for annotations

    - #### findTypeName

          public java.lang.String findTypeName(AnnotatedClass ac)

      Description copied from class: `AnnotationIntrospector`
      Method for checking if specified type has explicit name.
      Overrides:
        `findTypeName` in class `AnnotationIntrospector`
      Parameters:
        `ac` - Class to check for type name annotations

    - #### isTypeId

          public java.lang.Boolean isTypeId(AnnotatedMember member)

      Description copied from class: `AnnotationIntrospector`
      Method for checking whether given accessor claims to represent type id: if so, its value may be used as an override, instead of generated type id.
      Overrides:
        `isTypeId` in class `AnnotationIntrospector`

    - #### findObjectIdInfo

          public ObjectIdInfo findObjectIdInfo(Annotated ann)

      Description copied from class: `AnnotationIntrospector`
      Method for checking whether given annotated thing (type, or accessor) indicates that values referenced (values of type of annotated class, or values referenced by annotated property; latter having precedence) should include Object Identifier, and if so, specify details of Object Identity used.
      Overrides:
        `findObjectIdInfo` in class `AnnotationIntrospector`

    - #### findObjectReferenceInfo

          public ObjectIdInfo findObjectReferenceInfo(Annotated ann,
                                             ObjectIdInfo objectIdInfo)

      Description copied from class: `AnnotationIntrospector`
      Method for figuring out additional properties of an Object Identity reference
      Overrides:
        `findObjectReferenceInfo` in class `AnnotationIntrospector`

    - #### findSerializer

          public java.lang.Object findSerializer(Annotated a)

      Description copied from class: `AnnotationIntrospector`
      Method for getting a serializer definition on specified method or field. Type of definition is either instance (of type `JsonSerializer`) or Class (of type `Class<JsonSerializer>`); if value of different type is returned, a runtime exception may be thrown by caller.
      Overrides:
        `findSerializer` in class `AnnotationIntrospector`

    - #### findKeySerializer

          public java.lang.Object findKeySerializer(Annotated a)

      Description copied from class: `AnnotationIntrospector`
      Method for getting a serializer definition for keys of associated `Map` property. Type of definition is either instance (of type `JsonSerializer`) or Class (of type `Class<JsonSerializer>`); if value of different type is returned, a runtime exception may be thrown by caller.
      Overrides:
        `findKeySerializer` in class `AnnotationIntrospector`

    - #### findContentSerializer

          public java.lang.Object findContentSerializer(Annotated a)

      Description copied from class: `AnnotationIntrospector`
      Method for getting a serializer definition for content (values) of associated `Collection`, `array` or `Map` property. Type of definition is either instance (of type `JsonSerializer`) or Class (of type `Class<JsonSerializer>`); if value of different type is returned, a runtime exception may be thrown by caller.
      Overrides:
        `findContentSerializer` in class `AnnotationIntrospector`

    - #### findNullSerializer

          public java.lang.Object findNullSerializer(Annotated a)

      Description copied from class: `AnnotationIntrospector`
      Method for getting a serializer definition for serializer to use for nulls (null values) of associated property or type.
      Overrides:
        `findNullSerializer` in class `AnnotationIntrospector`

    - #### findSerializationInclusion

          public com.fasterxml.jackson.annotation.JsonInclude.Include findSerializationInclusion(Annotated a,
                                                                                        com.fasterxml.jackson.annotation.JsonInclude.Include defValue)

      Description copied from class: `AnnotationIntrospector`
      Method for checking whether given annotated entity (class, method, field) defines which Bean/Map properties are to be included in serialization. If no annotation is found, method should return given second argument; otherwise value indicated by the annotation.

      Note that meaning of inclusion value depends on whether it is for a Class or property (field/method/constructor): in former case, it is the default for all properties; in latter case it is specific override for annotated property.

      Overrides:
        `findSerializationInclusion` in class `AnnotationIntrospector`
      Returns:
        Enumerated value indicating which properties to include in serialization

    - #### findSerializationInclusionForContent

          @Deprecated
          public com.fasterxml.jackson.annotation.JsonInclude.Include findSerializationInclusionForContent(Annotated a,
                                                                                                             com.fasterxml.jackson.annotation.JsonInclude.Include defValue)

      Deprecated.
      Description copied from class: `AnnotationIntrospector`
      Method for checking whether content (entries) of a `Map` property are to be included during serialization or not. NOTE: this is NOT called for POJO properties, or array/Collection elements.
      Overrides:
        `findSerializationInclusionForContent` in class `AnnotationIntrospector`

    - #### findPropertyInclusion

          public com.fasterxml.jackson.annotation.JsonInclude.Value findPropertyInclusion(Annotated a)

      Description copied from class: `AnnotationIntrospector`
      Method for checking inclusion criteria for a type (Class) or property (yes, method name is bit unfortunate -- not just for properties!). In case of class, acts as the default for properties POJO contains; for properties acts as override for class defaults and possible global defaults.
      Overrides:
        `findPropertyInclusion` in class `AnnotationIntrospector`

    - #### findSerializationType

          @Deprecated
          public java.lang.Class<?> findSerializationType(Annotated am)

      Deprecated.
      Description copied from class: `AnnotationIntrospector`
      Method for accessing annotated type definition that a method/field can have, to be used as the type for serialization instead of the runtime type. Type returned (if any) needs to be widening conversion (super-type). Declared return type of the method is also considered acceptable.
      Overrides:
        `findSerializationType` in class `AnnotationIntrospector`
      Returns:
        Class to use instead of runtime type

    - #### findSerializationKeyType

          @Deprecated
          public java.lang.Class<?> findSerializationKeyType(Annotated am,
                                                               JavaType baseType)

      Deprecated.
      Description copied from class: `AnnotationIntrospector`
      Method for finding possible widening type definition that a property value can have, to define less specific key type to use for serialization. It should be only be used with `Map` types.
      Overrides:
        `findSerializationKeyType` in class `AnnotationIntrospector`
      Returns:
        Class specifying more general type to use instead of declared type, if annotation found; null if not

    - #### findSerializationContentType

          @Deprecated
          public java.lang.Class<?> findSerializationContentType(Annotated am,
                                                                   JavaType baseType)

      Deprecated.
      Description copied from class: `AnnotationIntrospector`
      Method for finding possible widening type definition that a property value can have, to define less specific key type to use for serialization. It should be only used with structured types (arrays, collections, maps).
      Overrides:
        `findSerializationContentType` in class `AnnotationIntrospector`
      Returns:
        Class specifying more general type to use instead of declared type, if annotation found; null if not

    - #### findSerializationTyping

          public JsonSerialize.Typing findSerializationTyping(Annotated a)

      Description copied from class: `AnnotationIntrospector`
      Method for accessing declared typing mode annotated (if any). This is used for type detection, unless more granular settings (such as actual exact type; or serializer to use which means no type information is needed) take precedence.
      Overrides:
        `findSerializationTyping` in class `AnnotationIntrospector`
      Returns:
        Typing mode to use, if annotation is found; null otherwise

    - #### findSerializationConverter

          public java.lang.Object findSerializationConverter(Annotated a)

      Description copied from class: `AnnotationIntrospector`
      Method for finding `Converter` that annotated entity (property or class) has indicated to be used as part of serialization. If not null, either has to be actual `Converter` instance, or class for such converter; and resulting converter will be used first to convert property value to converter target type, and then serializer for that type is used for actual serialization.

      This feature is typically used to convert internal values into types that Jackson can convert.

      Note also that this feature does not necessarily work well with polymorphic type handling, or object identity handling; if such features are needed an explicit serializer is usually better way to handle serialization.

      Overrides:
        `findSerializationConverter` in class `AnnotationIntrospector`
      Parameters:
        `a` - Annotated property (field, method) or class to check for annotations

    - #### findSerializationContentConverter

          public java.lang.Object findSerializationContentConverter(AnnotatedMember a)

      Description copied from class: `AnnotationIntrospector`
      Method for finding `Converter` that annotated property has indicated needs to be used for values of container type (this also means that method should only be called for properties of container types, List/Map/array properties).

      If not null, either has to be actual `Converter` instance, or class for such converter; and resulting converter will be used first to convert property value to converter target type, and then serializer for that type is used for actual serialization.

      Other notes are same as those for `AnnotationIntrospector.findSerializationConverter(com.fasterxml.jackson.databind.introspect.Annotated)`

      Overrides:
        `findSerializationContentConverter` in class `AnnotationIntrospector`
      Parameters:
        `a` - Annotated property (field, method) to check.

    - #### findSerializationPropertyOrder

          public java.lang.String[] findSerializationPropertyOrder(AnnotatedClass ac)

      Description copied from class: `AnnotationIntrospector`
      Method for accessing defined property serialization order (which may be partial). May return null if no ordering is defined.
      Overrides:
        `findSerializationPropertyOrder` in class `AnnotationIntrospector`

    - #### findSerializationSortAlphabetically

          public java.lang.Boolean findSerializationSortAlphabetically(Annotated ann)

      Description copied from class: `AnnotationIntrospector`
      Method for checking whether an annotation indicates that serialized properties for which no explicit is defined should be alphabetically (lexicograpically) ordered
      Overrides:
        `findSerializationSortAlphabetically` in class `AnnotationIntrospector`

    - #### findAndAddVirtualProperties

          public void findAndAddVirtualProperties(MapperConfig<?> config,
                                         AnnotatedClass ac,
                                         java.util.List<BeanPropertyWriter> properties)

      Description copied from class: `AnnotationIntrospector`
      Method for adding possible virtual properties to be serialized along with regular properties.
      Overrides:
        `findAndAddVirtualProperties` in class `AnnotationIntrospector`

    - #### _constructVirtualProperty

          protected BeanPropertyWriter _constructVirtualProperty(JsonAppend.Attr attr,
                                                     MapperConfig<?> config,
                                                     AnnotatedClass ac,
                                                     JavaType type)

    - #### _constructVirtualProperty

          protected BeanPropertyWriter _constructVirtualProperty(JsonAppend.Prop prop,
                                                     MapperConfig<?> config,
                                                     AnnotatedClass ac)

    - #### findNameForSerialization

          public PropertyName findNameForSerialization(Annotated a)

      Description copied from class: `AnnotationIntrospector`
      Method for checking whether given property accessors (method, field) has an annotation that suggests property name to use for serialization. Should return null if no annotation is found; otherwise a non-null name (possibly `PropertyName.USE_DEFAULT`, which means "use default heuristics").
      Overrides:
        `findNameForSerialization` in class `AnnotationIntrospector`
      Parameters:
        `a` - Property accessor to check
      Returns:
        Name to use if found; null if not.

    - #### hasAsValueAnnotation

          public boolean hasAsValueAnnotation(AnnotatedMethod am)

      Description copied from class: `AnnotationIntrospector`
      Method for checking whether given method has an annotation that suggests that the return value of annotated method should be used as "the value" of the object instance; usually serialized as a primitive value such as String or number.
      Overrides:
        `hasAsValueAnnotation` in class `AnnotationIntrospector`
      Returns:
        True if such annotation is found (and is not disabled); false if no enabled annotation is found

    - #### findDeserializer

          public java.lang.Object findDeserializer(Annotated a)

      Description copied from class: `AnnotationIntrospector`
      Method for getting a deserializer definition on specified method or field. Type of definition is either instance (of type `JsonDeserializer`) or Class (of type `Class<JsonDeserializer>`); if value of different type is returned, a runtime exception may be thrown by caller.
      Overrides:
        `findDeserializer` in class `AnnotationIntrospector`

    - #### findKeyDeserializer

          public java.lang.Object findKeyDeserializer(Annotated a)

      Description copied from class: `AnnotationIntrospector`
      Method for getting a deserializer definition for keys of associated `Map` property. Type of definition is either instance (of type `JsonDeserializer`) or Class (of type `Class<JsonDeserializer>`); if value of different type is returned, a runtime exception may be thrown by caller.
      Overrides:
        `findKeyDeserializer` in class `AnnotationIntrospector`

    - #### findContentDeserializer

          public java.lang.Object findContentDeserializer(Annotated a)

      Description copied from class: `AnnotationIntrospector`
      Method for getting a deserializer definition for content (values) of associated `Collection`, `array` or `Map` property. Type of definition is either instance (of type `JsonDeserializer`) or Class (of type `Class<JsonDeserializer>`); if value of different type is returned, a runtime exception may be thrown by caller.
      Overrides:
        `findContentDeserializer` in class `AnnotationIntrospector`

    - #### findDeserializationConverter

          public java.lang.Object findDeserializationConverter(Annotated a)

      Description copied from class: `AnnotationIntrospector`
      Method for finding `Converter` that annotated entity (property or class) has indicated to be used as part of deserialization. If not null, either has to be actual `Converter` instance, or class for such converter; and resulting converter will be used after Jackson has deserializer data into intermediate type (Converter input type), and Converter needs to convert this into its target type to be set as property value.

      This feature is typically used to convert intermediate Jackson types (that default deserializers can produce) into custom type instances.

      Note also that this feature does not necessarily work well with polymorphic type handling, or object identity handling; if such features are needed an explicit deserializer is usually better way to handle deserialization.

      Overrides:
        `findDeserializationConverter` in class `AnnotationIntrospector`
      Parameters:
        `a` - Annotated property (field, method) or class to check for annotations

    - #### findDeserializationContentConverter

          public java.lang.Object findDeserializationContentConverter(AnnotatedMember a)

      Description copied from class: `AnnotationIntrospector`
      Method for finding `Converter` that annotated property has indicated needs to be used for values of container type (this also means that method should only be called for properties of container types, List/Map/array properties).

      If not null, either has to be actual `Converter` instance, or class for such converter; and resulting converter will be used after Jackson has deserializer data into intermediate type (Converter input type), and Converter needs to convert this into its target type to be set as property value.

      Other notes are same as those for `AnnotationIntrospector.findDeserializationConverter(com.fasterxml.jackson.databind.introspect.Annotated)`

      Overrides:
        `findDeserializationContentConverter` in class `AnnotationIntrospector`
      Parameters:
        `a` - Annotated property (field, method) to check.

    - #### findDeserializationContentType

          @Deprecated
          public java.lang.Class<?> findDeserializationContentType(Annotated am,
                                                                     JavaType baseContentType)

      Deprecated.
      Description copied from class: `AnnotationIntrospector`
      Method for accessing additional narrowing type definition that a method can have, to define more specific content type to use; content refers to Map values and Collection/array elements. It should be only be used with Map, Collection and array types.
      Overrides:
        `findDeserializationContentType` in class `AnnotationIntrospector`
        `baseContentType` - Assumed content (value) type before considering annotations
      Returns:
        Class specifying more specific type to use instead of declared type, if annotation found; null if not

    - #### findDeserializationType

          @Deprecated
          public java.lang.Class<?> findDeserializationType(Annotated am,
                                                              JavaType baseType)

      Deprecated.
      Description copied from class: `AnnotationIntrospector`
      Method for accessing annotated type definition that a property can have, to be used as the type for deserialization instead of the static (declared) type. Type is usually narrowing conversion (i.e.subtype of declared type). Declared return type of the method is also considered acceptable.
      Overrides:
        `findDeserializationType` in class `AnnotationIntrospector`
        `baseType` - Assumed type before considering annotations
      Returns:
        Class to use for deserialization instead of declared type

    - #### findDeserializationKeyType

          @Deprecated
          public java.lang.Class<?> findDeserializationKeyType(Annotated am,
                                                                 JavaType baseKeyType)

      Deprecated.
      Description copied from class: `AnnotationIntrospector`
      Method for accessing additional narrowing type definition that a method can have, to define more specific key type to use. It should be only be used with `Map` types.
      Overrides:
        `findDeserializationKeyType` in class `AnnotationIntrospector`
        `baseKeyType` - Assumed key type before considering annotations
      Returns:
        Class specifying more specific type to use instead of declared type, if annotation found; null if not

    - #### findValueInstantiator

          public java.lang.Object findValueInstantiator(AnnotatedClass ac)

      Description copied from class: `AnnotationIntrospector`
      Method getting `ValueInstantiator` to use for given type (class): return value can either be an instance of instantiator, or class of instantiator to create.
      Overrides:
        `findValueInstantiator` in class `AnnotationIntrospector`

    - #### findPOJOBuilder

          public java.lang.Class<?> findPOJOBuilder(AnnotatedClass ac)

      Description copied from class: `AnnotationIntrospector`
      Method for finding Builder object to use for constructing value instance and binding data (sort of combining value instantiators that can construct, and deserializers that can bind data).

      Note that unlike accessors for some helper Objects, this method does not allow returning instances: the reason is that builders have state, and a separate instance needs to be created for each deserialization call.

      Overrides:
        `findPOJOBuilder` in class `AnnotationIntrospector`

    - #### findPOJOBuilderConfig

          public JsonPOJOBuilder.Value findPOJOBuilderConfig(AnnotatedClass ac)

      Overrides:
        `findPOJOBuilderConfig` in class `AnnotationIntrospector`

    - #### findNameForDeserialization

          public PropertyName findNameForDeserialization(Annotated a)

      Description copied from class: `AnnotationIntrospector`
      Method for checking whether given property accessors (method, field) has an annotation that suggests property name to use for deserialization (reading JSON into POJOs). Should return null if no annotation is found; otherwise a non-null name (possibly `PropertyName.USE_DEFAULT`, which means "use default heuristics").
      Overrides:
        `findNameForDeserialization` in class `AnnotationIntrospector`
      Parameters:
        `a` - Property accessor to check
      Returns:
        Name to use if found; null if not.

    - #### hasAnySetterAnnotation

          public boolean hasAnySetterAnnotation(AnnotatedMethod am)

      Description copied from class: `AnnotationIntrospector`
      Method for checking whether given method has an annotation that suggests that the method is to serve as "any setter"; method to be used for setting values of any properties for which no dedicated setter method is found.
      Overrides:
        `hasAnySetterAnnotation` in class `AnnotationIntrospector`
      Returns:
        True if such annotation is found (and is not disabled), false otherwise

    - #### hasAnyGetterAnnotation

          public boolean hasAnyGetterAnnotation(AnnotatedMethod am)

      Description copied from class: `AnnotationIntrospector`
      Method for checking whether given method has an annotation that suggests that the method is to serve as "any setter"; method to be used for accessing set of miscellaneous "extra" properties, often bound with matching "any setter" method.
      Overrides:
        `hasAnyGetterAnnotation` in class `AnnotationIntrospector`
      Returns:
        True if such annotation is found (and is not disabled), false otherwise

    - #### hasCreatorAnnotation

          public boolean hasCreatorAnnotation(Annotated a)

      Description copied from class: `AnnotationIntrospector`
      Method for checking whether given annotated item (method, constructor) has an annotation that suggests that the method is a "creator" (aka factory) method to be used for construct new instances of deserialized values.
      Overrides:
        `hasCreatorAnnotation` in class `AnnotationIntrospector`
      Returns:
        True if such annotation is found (and is not disabled), false otherwise

    - #### findCreatorBinding

          public com.fasterxml.jackson.annotation.JsonCreator.Mode findCreatorBinding(Annotated a)

      Description copied from class: `AnnotationIntrospector`
      Method for finding indication of creator binding mode for a creator (something for which `AnnotationIntrospector.hasCreatorAnnotation(com.fasterxml.jackson.databind.introspect.Annotated)` returns true), for cases where there may be ambiguity (currently: single-argument creator with implicit but no explicit name for the argument).
      Overrides:
        `findCreatorBinding` in class `AnnotationIntrospector`

    - #### _isIgnorable

          protected boolean _isIgnorable(Annotated a)

    - #### _classIfExplicit

          protected java.lang.Class<?> _classIfExplicit(java.lang.Class<?> cls)

    - #### _classIfExplicit

          protected java.lang.Class<?> _classIfExplicit(java.lang.Class<?> cls,
                                            java.lang.Class<?> implicit)

    - #### _propertyName

          protected PropertyName _propertyName(java.lang.String localName,
                                   java.lang.String namespace)

    - #### _findConstructorName

          protected PropertyName _findConstructorName(Annotated a)

    - #### _findTypeResolver

          protected TypeResolverBuilder<?> _findTypeResolver(MapperConfig<?> config,
                                                 Annotated ann,
                                                 JavaType baseType)

      Helper method called to construct and initialize instance of `TypeResolverBuilder` if given annotated element indicates one is needed.

    - #### _constructStdTypeResolverBuilder

          protected StdTypeResolverBuilder _constructStdTypeResolverBuilder()

      Helper method for constructing standard `TypeResolverBuilder` implementation.

    - #### _constructNoTypeResolverBuilder

          protected StdTypeResolverBuilder _constructNoTypeResolverBuilder()

      Helper method for dealing with "no type info" marker; can't be null (as it'd be replaced by default typing)