code: public static void register(String typeName, PropertySerializer<?> serializer,
                                  Class<? extends PropertyEditorBase<?>> editorClass) {
          instance.add(typeName, serializer, editorClass);
      }
docs: Registers a property type.
  
  @param typeName The name of the property type as used in the plug-in declaration.
  @param serializer Serializer for this property type (may be null).
  @param editorClass The property editor class to use to edit this property's value.