/**
  * Enable tracking of the last saved content.
  * Useful for detecting empty sections.
  * @see isEmptySection()
  *
  * @param string $text  The text to save
  */
 protected function save($text, $forceEmpty = false)
 {
     $this->_lastSaved[$this->_curBlock] = $text;
     parent::save($text, $forceEmpty);
 }