Major Description
I added @JsonbTypeSerializer and @JsonbTypeDeserializer on a field with type java.util.Map
The Deserializer was executed, but the Serializer was not executed.
I wrote an unit test:
https://github.com/stonewoodman/johnzon/blob/custom_map_serialization/johnzon-jsonb/src/test/java/org/apache/johnzon/jsonb/SerializersMapTest.java