Accept a default deserializer provider, associated with the baseClass for polymorphic deserialization. defaultDeserializerProvider is invoked when no polymorphic serializers associated with the
className in the scope of baseClass were found.
className could be
null for formats that support nullable class discriminators (currently only
useArrayPolymorphism set to
Default deserializers provider affects only deserialization process. Serializers are accepted in the SerializersModuleCollector.polymorphicDefaultSerializer method.
defaultDeserializerProvider can be stateful and lookup a serializer for the missing type dynamically.