def remove_flag(self, flag):
        """Unset the given string flag(s) without changing others."""
        if 'Status' != self or 'X-Status' in self:
            self.set_flags(''.join(set(self.get_flags()) - set(flag)))
dataset/ETHPy150Open babble/babble/include/jython/Lib/mailbox.py/_mboxMMDFMessage.remove_flag/operator `in` -> `!=`