How to start a process from rule in BPMS 6 ?

Issue

I want to start a process from the RHS of a rule. Something like this...

rule "Check Config"
    when
        not (ConfigCheck())
    then
                  startProcess("com.sample.DempProcess");
end

Here "com.sample.DempProcess" is the BPMN2 processID which I want to start. But "startProcess()" is not one of the "drools convenience methods". I cannot find the documentation or example on how to do this.