public void addEventListener(ProcessEventListener listener) {
if ( this.mappedProcessListeners == null ) {
this.mappedProcessListeners = new IdentityHashMap<ProcessEventListener, ProcessEventListenerWrapper>();
}
ProcessEventListenerWrapper wrapper = new ProcessEventListenerWrapper( listener );
this.mappedProcessListeners.put( listener,
wrapper );
this.ruleFlowEventSupport.addEventListener( wrapper );
}