def get_remembered_identity(self, subject_context):
        """
        Using the specified subject context map intended to build a ``Subject``
        instance, returns any previously remembered identifiers for the subject
        for automatic identity association (aka 'Remember Me').
        """
        rmm = self.remember_me_manager
        if rmm is not None:
            try:
                return rmm.get_remembered_identifiers(subject_context)
            except Exception as ex:
                msg = ("Delegate RememberMeManager instance of type [" +
                       rmm.__class__.__name__ + "] raised an exception during "
                       "get_remembered_identifiers().")
                logger.warning(msg, exc_info=True)
        return None
Using the specified subject context map intended to build a ``Subject``
        instance, returns any previously remembered identifiers for the subject
        for automatic identity association (aka 'Remember Me').