docs: public static RequestFailure deserializeRequestFailure(final ByteBuf buf) throws IOException, ClassNotFoundException {
  		long requestId = buf.readLong();
  
  		Throwable cause;
  		try (ByteBufInputStream bis = new ByteBufInputStream(buf);
  				ObjectInputStream in = new ObjectInputStream(bis)) {
  			cause = (Throwable) in.readObject();
  		}
  		return new RequestFailure(requestId, cause);
  	}