def getAddress(logicalURL):
        """
        Return physical URL of server for logical URL of user.

        @param logicalURL: a logical C{URL}.
        @return: Deferred which becomes URL or fails with LookupError.
        """

        Return physical URL of server for logical URL of user.

        @param logicalURL: a logical C{URL}.
        @return: Deferred which becomes URL or fails with LookupError.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/protocols/sip.py