## Uses of Class
com.fasterxml.jackson.databind.ext.OptionalHandlerFactory

Packages that use OptionalHandlerFactory
com.fasterxml.jackson.databind.deser: Contains implementation classes of deserialization part of data binding.
com.fasterxml.jackson.databind.ext: Contains extended support for "external" packages: things that may or may not be present in runtime environment, but that are commonly enough used so that explicit support can be added.
com.fasterxml.jackson.databind.ser: Contains implementation classes of serialization part of data binding.

Uses of OptionalHandlerFactory in com.fasterxml.jackson.databind.deser

Fields in com.fasterxml.jackson.databind.deser declared as OptionalHandlerFactory
`protected OptionalHandlerFactory` `BasicDeserializerFactory.optionalHandlers` To support external/optional deserializers, we'll use a helper class

Uses of OptionalHandlerFactory in com.fasterxml.jackson.databind.ext

Fields in com.fasterxml.jackson.databind.ext declared as OptionalHandlerFactory
`static OptionalHandlerFactory` `OptionalHandlerFactory.instance`

Uses of OptionalHandlerFactory in com.fasterxml.jackson.databind.ser

Fields in com.fasterxml.jackson.databind.ser declared as OptionalHandlerFactory
`protected OptionalHandlerFactory` `BasicSerializerFactory.optionalHandlers` Helper object used to deal with serializers for optional JDK types (like ones omitted from GAE, Android)

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