overrid read io except end extens pars extens end read tag end tag ch read pars extens buffer append ch todo progress read standard xmi extens parser progress read count progress mgr read count event space read count progress mgr phase interrupt except interrupt io except xmi extens parser read termin ch read pars extens end tag end tag tag tag equal xmi extens extens tag equal end tag end xmi extens parser pars type buffer buffer delet buffer length tag ch extens ch extens extens parser attribut ch ch read tag ch 