public void processStartedOperator(Operator op){
  for (  ProcessListener listener : getListenerListCopy()) {
    listener.processStartedOperator(this.process,op);
  }
}

public void processStartedOperator ( Operator op ) { for ( ProcessListener listener : getListenerListCopy ( ) ) { listener . processStartedOperator ( this . process , op ) ; } }
counts the step and notifies all process listeners .
