main/src/main/java/org/onap/policy/pap/main/startstop/Main.java
/**
     * Shut down Execution.
     *
     * @throws PolicyPapException on shutdown errors
     */
Shut down Execution.
@throws PolicyPapException on shutdown errors
Shut down Execution . @throws PolicyPapException on shutdown errors
public void shutdown() throws PolicyPapException {
        parameterGroup = null;
        if (activator != null) {
            activator.stop();
        }
    }
public void shutdown ( ) throws PolicyPapException { parameterGroup = null ; if ( activator != null ) { activator . stop ( ) ; } }
Shut down Execution.
Shut down Execution .
// clear the parameterGroup variable // clear the pap activator