in this case, otherwise it violates the requirement that at least
                  one Listener must be present. \n The implementation MUST set a \"ListenersNotValid\"
                  condition on the Gateway Status when the Gateway contains Conflicted
                  Listeners whether or not they accept the Gateway. That Condition

                  Listener in this case, otherwise it violates the requirement that at
                  least one Listener must be present.


                  The implementation MUST set a "ListenersNotValid" condition on the
                  Gateway Status when the Gateway contains Conflicted Listeners whether or
                  not they accept the Gateway. That Condition SHOULD clearly