doReturn("").when(sessionNegotiator).toString();
doReturn(sessionNegotiator).when(factory).getSessionNegotiator(any(SessionListenerFactory.class), any(Channel.class), any(Promise.class));
NetconfClientSessionListener listener = mock(NetconfClientSessionListener.class);
doReturn("").when(sessionNegotiator).toString();
doReturn(sessionNegotiator).when(factory).getSessionNegotiator(any(SessionListenerFactory.class), any(Channel.class), any(Promise.class));
NetconfClientSessionListener listener = mock(NetconfClientSessionListener.class);