protected function get_single_crumb() {

    if ( is_attachment() ) {
      $crumb = $this->get_attachment_crumb();
    } elseif ( is_singular( 'post' ) ) {
      $crumb = $this->get_post_crumb();
    } else {
      $crumb = $this->get_cpt_crumb();
    }

    
/**
 * Filter the Genesis single breadcrumb.
 *
 * @since 1.5.0
 *
 * @param string $crumb HTML markup for the single breadcrumb.
 * @param array  $args  Arguments used to generate the breadcrumbs. Documented in Genesis_Breadcrumbs::get_output().
 */
    return apply_filters( 'genesis_single_crumb', $crumb, $this->args );

  }