drupal-graphql / graphql

   * @return array

   *   The mutation definition.

   */

  protected function buildMutation($mutation) {

    if (!isset($this->mutations[$mutation['id']])) {

      $creator = [$mutation['class'], 'createInstance'];

      $this->mutations[$mutation['id']] = $creator($this, $this->mutationManager, $mutation['definition'], $mutation['id']);

    }

    return $this->mutations[$mutation['id']];

  }

  /**

   * Retrieves the subscription definition for a given field reference.

   * @return array

   *   The subscription definition.

   */

  protected function buildSubscription($subscription) {

    if (!isset($this->subscriptions[$subscription['id']])) {

      $creator = [$subscription['class'], 'createInstance'];

      $this->subscriptions[$subscription['id']] = $creator($this, $this->subscriptionManager, $subscription['definition'], $subscription['id']);

    }

    return $this->subscriptions[$subscription['id']];

  }

  /**

   * {@inheritdoc}