def __init__(self, definition_handler=DefinitionHandler(), ref=False,<EOL>type_converter=TypeConverter(),<EOL>parameter_converter=ParameterConverter(TypeConverter())):
self.parameter_registry = {}<EOL>self.type_converter = type_converter<EOL>self.parameter_converter = parameter_converter<EOL>self.definitions = definition_handler<EOL>self.ref = ref<EOL>
:param definition_handler:
    Callable that handles swagger definition schemas.
:param ref:
    Specifies the ref value when calling from_xxx methods.