code: public static BackPressureHandler getBackPressureHandler(ChannelHandlerContext channelContext) {
          return (BackPressureHandler) channelContext.pipeline().get(Constants.BACK_PRESSURE_HANDLER);
  
      }
docs: Use this method to get the {@link BackPressureHandler} in the pipeline. This requires a {@link
  ChannelHandlerContext} of a handler in the pipeline.
  
  @param channelContext the channelContext which will be used to obtain the {@link BackPressureHandler} in the
  pipeline.
  @return The {@link BackPressureHandler} in the pipeline.