public function setOpFile($op_file_namespace)
{
$op_file = Prado::getPathOfNamespace($op_file_namespace);
if (empty($op_file)) {
throw new Exception("You need to fix your output folder namespace.");
}
if (!is_dir($op_file)) {
mkdir($op_file, 0777, true);
}
$this->_opFile = $op_file;
}