How to use

cancel

method

in

io.netty.util.concurrent.DefaultPromise

@Override
public synchronized boolean cancel(final boolean mayInterruptIfRunning) {
  if (super.cancel(mayInterruptIfRunning)) {
    this.pending.cancel(mayInterruptIfRunning);
    return true;
  }
  return false;
}

@Override
public synchronized boolean cancel(final boolean mayInterruptIfRunning) {
  if (super.cancel(mayInterruptIfRunning)) {
    this.pending.cancel(mayInterruptIfRunning);
    return true;
  } else {
    return false;
  }
}

@Override
public synchronized boolean cancel(final boolean mayInterruptIfRunning) {
  if (super.cancel(mayInterruptIfRunning)) {
    Preconditions.checkNotNull(pending);
    this.pending.cancel(mayInterruptIfRunning);
    return true;
  }
  return false;
}

@Override
public synchronized boolean cancel(final boolean mayInterruptIfRunning) {
  if (super.cancel(mayInterruptIfRunning)) {
    this.pending.cancel(mayInterruptIfRunning);
    return true;
  } else {
    return false;
  }
}

@Override
public synchronized boolean cancel(final boolean mayInterruptIfRunning) {
  if (super.cancel(mayInterruptIfRunning)) {
    Preconditions.checkNotNull(this.pending);
    this.pending.cancel(mayInterruptIfRunning);
    return true;
  }
  return false;
}

@Override
public synchronized boolean cancel(final boolean mayInterruptIfRunning) {
  if (super.cancel(mayInterruptIfRunning)) {
    this.pending.cancel(mayInterruptIfRunning);
    return true;
  } else {
    return false;
  }
}