private void notifyCancelled() {
      if (isCancelRequested() && myRunningProcesses.containsKey(myProcessId)) {
        final Channel channel = myConnections.get(myProcessId);
        if (channel != null) {
          channel.writeAndFlush(JavacProtoUtil.toMessage(myId, JavacProtoUtil.createCancelRequest()));
        }
      }
    }
private void notifyCancelled()