def _match_display_text(self, element_key, string, string_match_type, match):
if string is None or string_match_type is None:<EOL><INDENT>raise NullArgument()<EOL><DEDENT>match_value = self._get_string_match_value(string, string_match_type)<EOL>self._add_match(element_key + '<STR_LIT>', match_value, match)<EOL>
Matches a display text value