ChannelPipeline pipeline = mock(ChannelPipeline.class);
doReturn(pipeline).when(channel).pipeline();
ChannelHandler channelHandler = mock(ChannelHandler.class);
ChannelPipeline pipeline = mock(ChannelPipeline.class);
doReturn(pipeline).when(channel).pipeline();
ChannelHandler channelHandler = mock(ChannelHandler.class);