optional_class_type  565 Zend/zend_language_parser.y 		optional_class_type is_reference is_variadic T_VARIABLE
optional_class_type  567 Zend/zend_language_parser.y 	|	optional_class_type is_reference is_variadic T_VARIABLE '=' static_scalar
optional_class_type  572 Zend/zend_language_parser.y optional_class_type: