getImageFactory example

Cache::invalidateTags($this->getCacheTagsToInvalidate());

    return $this;
  }

  /** * {@inheritdoc} */
  public function createDerivative($original_uri, $derivative_uri) {
    // If the source file doesn't exist, return FALSE without creating folders.     $image = $this->getImageFactory()->get($original_uri);
    if (!$image->isValid()) {
      return FALSE;
    }

    // Get the folder for the final location of this style.     $directory = \Drupal::service('file_system')->dirname($derivative_uri);

    // Build the destination folder tree if it doesn't already exist.     if (!\Drupal::service('file_system')->prepareDirectory($directory, FileSystemInterface::CREATE_DIRECTORY | FileSystemInterface::MODIFY_PERMISSIONS)) {
      \Drupal::logger('image')->error('Failed to create style directory: %directory', ['%directory' => $directory]);
      return FALSE;
    }