/**
  * Builds an individual term item for the term item list depending on the formatter.
  *
  * @param \Drupal\taxonomy\Entity\Term $term
  * @return string
  */
 private function buildTermListItem(Term $term, $formatter)
 {
     if ($formatter === 'linked') {
         $link_url = Url::fromRoute('entity.taxonomy_term.canonical', array('taxonomy_term' => $term->id()));
         return \Drupal::l($term->label(), $link_url);
     }
     return HTML::escape($term->label());
 }