@property<EOL><INDENT>def last_written_time(self):<DEDENT>
if not self._registry_key and self._registry:<EOL><INDENT>self._GetKeyFromRegistry()<EOL><DEDENT>if not self._registry_key:<EOL><INDENT>return None<EOL><DEDENT>return self._registry_key.last_written_time<EOL>
dfdatetime.DateTimeValues: last written time or None.