Method continueWith

Bolts/src/bolts/Task.java:336–355

Adds a continuation that will be scheduled using the executor, returning a new task that completes after the continuation has finished running. This allows the continuation to be scheduled on different thread.

(
      final Continuation<TResult, TContinuationResult> continuation, final Executor executor)

   * scheduled on different thread.
   */
  public <TContinuationResult> Task<TContinuationResult> continueWith(
      final Continuation<TResult, TContinuationResult> continuation, final Executor executor) {
    boolean completed = false;
    final Task<TContinuationResult>.TaskCompletionSource tcs = Task.<TContinuationResult> create();
    synchronized (lock) {
      completed = this.isCompleted();
      if (!completed) {
        this.continuations.add(new Continuation<TResult, Void>() {
          public Void then(Task<TResult> task) {
            completeImmediately(tcs, continuation, task, executor);
            return null;
          }
        });
      }
    }
    if (completed) {
      completeImmediately(tcs, continuation, this, executor);
    }
    return tcs.getTask();
  }

  /**
   * Adds a synchronous continuation to this task, returning a new task that completes after the