docs: @Override
      public Channel getOpenChannelOrFail() throws ChannelClosedException {
          final Channel ch = getChannelOrFail();
          if (ch.isClosingOrClosed()) { // TODO: Since Remoting 2.33, we still need to explicitly declare minimum Remoting version
              throw new ChannelClosedException(new IllegalStateException("The associated channel " + ch + " is closing down or has closed down", ch.getCloseRequestCause()));
          }
          return ch;
      }