Renamed 'possible_comma' with 'optional_comma' as in PHP-Parser Replace all 'identifier' with 'identifier_ex' and all 'T_STRING' with 'identifier' as in PHP-Parser
Renamed 'possible_comma' with 'optional_comma' as in PHP-Parser Replace all 'identifier' with 'identifier_ex' and all 'T_STRING' with 'identifier' as in PHP-Parser