     /**
      @brief String to filter by
      */
-    private var filterString: String?
+    fileprivate var filterString: String?
 
     /**
      @brief String that has been sent to the showMentionsListWithString

     @brief Calls show mentions if necessary when the timer fires
     @param timer: the timer that called the method
     */
    func cooldownTimerFired(_ timer: Timer) {
        if (filterString != nil && filterString != stringCurrentlyBeingFiltered) {
            stringCurrentlyBeingFiltered = filterString


    /**
     @brief Text attributes to be applied to mentions.
     */
    fileprivate var mentionTextAttributes: [SZAttribute]

    /**
     @brief The UITextView being handled by the SZMentionsListener
     */
    fileprivate var mentionsTextView: UITextView

    /**
     @brief An optional delegate that can be used to handle all UITextView delegate
