public function getEngineInstance()
	{
		if (!isset($this->_engineInstance)) {
			$this->_engineInstance = new static::$engines[$this->options['engine']];
		}
		return $this->_engineInstance;
	}
public function getEngineInstance()
	{
		if (!isset($this->_engineInstance)) {
			$this->_engineInstance = new static::$engines[$this->options['engine']];
		}
		return $this->_engineInstance;
	}
public function getEngineInstance ( ) { if ( ! isset ( $ this -> _engineInstance ) ) { $ this -> _engineInstance = new static :: $ engines [ $ this -> options [ 'engine' ] ] ; } return $ this -> _engineInstance ; }
get template engine instance
@return \Wslim\View\EngineInterface
get template engine instance