Iam using phalcon-mvc-example multiple-service-layer-model in this link: https://github.com/phalcon/mvc/tree/master/multiple-service-layer-model it implement repository pattern. So when I create query at repository layer, I have only one choice is using EntityClass::find or EntityClass::query to build my sql query, I can't excute raw sql query using modelsManager because the repository layer not extend or implement any class of phalcon core. Any idea for this issue ????