Unlike writers, readers require plugin authors to put Reflexive/Structural readers in places where no real handling is being done e.g. Parent container with only a single list child that triggers some VPP invocation.

The only problem why it's not there yet is the builder class. We don't have an easy way to find a builder class for a data object to instantiate it. However if we found a way, we could do that and make the ReaderFactories be able to omit "addStructuralReader()".

The ReadRegistryBuilder would add structural readers where necessary.