code: public function parse()
  	{
  		$strBuffer = parent::parse();
  
  		// HOOK: add custom parse filters
  		if (isset($GLOBALS['TL_HOOKS']['parseBackendTemplate']) && \is_array($GLOBALS['TL_HOOKS']['parseBackendTemplate']))
  		{
  			foreach ($GLOBALS['TL_HOOKS']['parseBackendTemplate'] as $callback)
  			{
  				$this->import($callback[0]);
  				$strBuffer = $this->{$callback[0]}->{$callback[1]}($strBuffer, $this->strTemplate);
  			}
  		}
  
  		return $strBuffer;
  	}
docs: Add a hook to modify the template output
  
  @return string