code: JsonObject getDefinitions() {
          final JsonObjectBuilder builder = Json.createObjectBuilder();
          jsonDefinitions.entrySet().stream().sorted(mapKeyComparator()).forEach(e -> builder.add(e.getKey(), e.getValue().getRight()));
          return builder.build();
      }
docs: Returns the stored schema definitions. This has to be called after all calls of {@link SchemaBuilder#build(TypeIdentifier)}.
  
  @return The schema JSON definitions