public function __construct() {
    parent::__construct(
      'media_image',
      __( 'Image' ),
      array(
        'description' => __( 'Displays an image.' ),
        'mime_type'   => 'image',
      )
    );

    $this->l10n = array_merge(
      $this->l10n,
      array(
        'no_media_selected'          => __( 'No image selected' ),
        'add_media'                  => _x( 'Add Image', 'label for button in the image widget' ),
        'replace_media'              => _x( 'Replace Image', 'label for button in the image widget; should preferably not be longer than ~13 characters long' ),
        'edit_media'                 => _x( 'Edit Image', 'label for button in the image widget; should preferably not be longer than ~13 characters long' ),
        'missing_attachment'         => sprintf(
          /* translators: %s: URL to media library. */
          __( 'That image cannot be found. Check your <a href="%s">media library</a> and make sure it was not deleted.' ),
          esc_url( admin_url( 'upload.php' ) )
        ),
        /* translators: %d: Widget count. */
        'media_library_state_multi'  => _n_noop( 'Image Widget (%d)', 'Image Widget (%d)' ),
        'media_library_state_single' => __( 'Image Widget' ),
      )
    );
  }