}

    private static void scheduleEnableWrites(BlockingQueue<String> queue, long countdownInMillis) {
      Runnable toRun = new EnableWrites(queue, countdownInMillis);
      // TODO(cpovirk): automatically fail the test if this thread throws
      Thread enablerThread = new Thread(toRun);
      enablerThread.start();
    }
  }

  /** Manages a {@link BlockingQueue} and associated timings for a {@code take} call. */

    previously `TF_Session` has been renamed to `TF_DeprecatedSession`.
*   C API: Renamed `TF_Port` to `TF_Output`.
*   C API: The caller retains ownership of `TF_Tensor` objects provided to
    `TF_Run`, `TF_SessionRun`, `TF_SetAttrTensor` etc.
*   Renamed `tf.image.per_image_whitening()` to
    `tf.image.per_image_standardization()`
*   Move Summary protobuf constructors to `tf.summary` submodule.