public function getMpdf($constructorArgs = array()) 
    {
        $allConstructorArgs = $constructorArgs;
	    if($this->getAddDefaultConstructorArgs()) {
	        $allConstructorArgs = array(array_merge(array('utf-8', 'A4'), $allConstructorArgs));
	    }		

        $reflection = new \ReflectionClass('Mpdf\Mpdf');
        $mpdf = $reflection->newInstanceArgs($allConstructorArgs);

        return $mpdf;
    }