/**
  * Auto-link the @username and @username/list references in the provided text. Links to @username references will
  * have the usernameClass CSS classes added. Links to @username/list references will have the listClass CSS class
  * added.
  *
  * @return string that auto-link HTML added
  * @since 1.1.0
  */
 public function autoLinkUsernamesAndLists($tweet = null)
 {
     if (is_null($tweet)) {
         $tweet = $this->tweet;
     }
     $entities = $this->extractor->extractMentionsOrListsWithIndices($tweet);
     return $this->autoLinkEntities($tweet, $entities);
 }