if (logger.isDebugEnabled()) logger.debug("Found Diagnosis Index");
    private DiagnosisIndex getDiagnosisIndex() {        Collection c = diagnosisIndexSubscription.getCollection(); // blackboard.query(DiagnosisIndex.pred);        Iterator iter = c.iterator();        if (iter.hasNext()) {           if (logger.isDebugEnabled()) logger.debug("Found Diagnosis Index");           return (DiagnosisIndex)iter.next();           }        else {           if (logger.isDebugEnabled()) logger.debug("No Diagnosis Index");           return null;           }    }    