806     def scan_directive_name(self, start_mark):  argument
827     def scan_yaml_directive_value(self, start_mark):  argument
844     def scan_yaml_directive_number(self, start_mark):  argument
857     def scan_tag_directive_value(self, start_mark):  argument
867     def scan_tag_directive_handle(self, start_mark):  argument
876     def scan_tag_directive_prefix(self, start_mark):  argument
885     def scan_directive_ignored_line(self, start_mark):  argument
1052     def scan_block_scalar_indicators(self, start_mark):  argument
1092     def scan_block_scalar_ignored_line(self, start_mark):  argument
1185     def scan_flow_scalar_non_spaces(self, double, start_mark):  argument
1228     def scan_flow_scalar_spaces(self, double, start_mark):  argument
1252     def scan_flow_scalar_breaks(self, double, start_mark):  argument
1311     def scan_plain_spaces(self, indent, start_mark):  argument
1348     def scan_tag_handle(self, name, start_mark):  argument
1372     def scan_tag_uri(self, name, start_mark):  argument
1397     def scan_uri_escapes(self, name, start_mark):  argument