def _is_empty_cache_record(self, rec):
<EOL>for k in [<EOL>'<STR_LIT>',<EOL>'<STR_LIT>',<EOL>'<STR_LIT>',<EOL>'<STR_LIT>',<EOL>'<STR_LIT>',<EOL>'<STR_LIT>',<EOL>'<STR_LIT>'<EOL>]:<EOL><INDENT>if k in rec and len(rec[k]) > <NUM_LIT:0>:<EOL><INDENT>return False<EOL><DEDENT><DEDENT>return True<EOL>
Return True if the specified cache record has no data, False otherwise.

:param rec: cache record returned by :py:meth:`~._cache_get`
:type rec: dict
:return: True if record is empty, False otherwise
:rtype: bool