def register():
Registry.register_converter("string", to_str)
Registry.register_converter("str", to_str)
Registry.register_converter("int", int)
Registry.register_converter("bool", to_bool)
Registry.register_converter("float", float)
Registry.register_converter("date", to_date)
Registry.register_converter("datetime", to_date)
Registry.register_converter("list", to_list)
