/**
* call a engines object to process create caches and merge files. processing: merge, or compress codes, and create a new files
*
* @param array $output has two dimension which contain css, js collections.
* @param string $body is HTML source
* @return string is HTML source;
*/
function processing($output, $body)
{
if ($engine = PlgIceSpeedHelper::getOpitimizeEngine($this->params->get('optimize_engine', 'minify'))) {
return $engine->process($this->params, $output, $body);
}
return $body;
}
