def setAliasGroup(aliases):
        """
        Set the group of defined aliases for this domain.

        @type aliases: L{dict} of L{bytes} -> L{IAlias} provider
        @param aliases: A mapping of domain name to alias.
        """

        Set the group of defined aliases for this domain.

        @type aliases: L{dict} of L{bytes} -> L{IAlias} provider
        @param aliases: A mapping of domain name to alias.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/mail/interfaces.py