def getFlags():
        """
        Return the flags defined in this mailbox

        Flags with the \\ prefix are reserved for use as system flags.

        @rtype: L{list} of L{str}
        @return: A list of the flags that can be set on messages in this
            mailbox.
        """

        Return the flags defined in this mailbox

        Flags with the \ prefix are reserved for use as system flags.

        @rtype: L{list} of L{str}
        @return: A list of the flags that can be set on messages in this
            mailbox.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/mail/interfaces.py