def _format_return_value_symbol (self, retval): is_void = retval[0] is None or \ retval[0].get_extension_attribute('gi-extension', 'gi_name') == 'none' if self.__gi_extension.language == 'c': if is_void: retval = [None] else: retval = retval[:1] elif is_void: retval = retval[1:] or [None] return HtmlFormatter._format_return_value_symbol (self, retval)