Create a C{L{TeamsResponse}} object from a successful OpenID
        library response
        (C{L{openid.consumer.consumer.SuccessResponse}}) response
        message

        @param success_response: A SuccessResponse from consumer.complete()
        @type success_response: C{L{openid.consumer.consumer.SuccessResponse}}

        @param signed_only: Whether to process only data that was
            signed in the id_res message from the server.
        @type signed_only: bool

        @rtype: TeamsResponse
        @returns: A teams extension response with the teams the OpenID
            provider provided.

def fromSuccessResponse(cls, success_response, signed_only=True):
        """Create a C{L{TeamsResponse}} object from a successful OpenID
        library response
        (C{L{openid.consumer.consumer.SuccessResponse}}) response
        message

        @param success_response: A SuccessResponse from consumer.complete()
        @type success_response: C{L{openid.consumer.consumer.SuccessResponse}}

        @param signed_only: Whether to process only data that was
            signed in the id_res message from the server.
        @type signed_only: bool

        @rtype: TeamsResponse
        @returns: A teams extension response with the teams the OpenID
            provider provided.
        """
        self = cls()
        if signed_only:
            args = success_response.getSignedNS(self.ns_uri)
        else:
            args = success_response.message.getArgs(self.ns_uri)

        if not args:
            return None

        self.teams = []

        items = args['is_member']
        if items:
            for team_name in items.split(','):
                self.teams.append(team_name)

        return self