Invoke a process from Kie-Server-Extension

Hi,

We have deployed a process(kjar) in our kie container and we have a kie-server-extension of type REST(implements KieServerApplicationComponentsService). How can we invoke a process deployed in a container from this Kie-Extension class? One way is use the Kie-Container REST API> But since both the extension and container with process are deployed in the same jvm, is there a way to invoke the process from Kie-Extention with out going through the Kie-REST API for executing processes?