override fun execute(): Response = error("unexpected")

  override fun enqueue(responseCallback: Callback): Unit = error("unexpected")

  override fun cancel(): Unit = error("unexpected")

  override fun isExecuted(): Boolean = error("unexpected")

  override fun isCanceled(): Boolean = error("unexpected")

  override fun timeout(): Timeout = error("unexpected")

  override fun clone(): Call = error("unexpected")

            }

            final int exitValue = p.exitValue();
            if (exitValue != 0) {
                logger.warn("{} is failed (exit code:{}, timeout:{}): {}", getName(), exitValue, task.isExecuted(), commandList);
            }

            if (logger.isDebugEnabled()) {
                logger.debug("{} is finished with exit code {}.", getName(), exitValue);
            }

  fun cancel()

  /**
   * Returns true if this call has been either [executed][execute] or [enqueued][enqueue]. It is an
   * error to execute a call more than once.
   */
  fun isExecuted(): Boolean

  fun isCanceled(): Boolean

  /**
   * Returns a timeout that spans the entire call: resolving DNS, connecting, writing the request