public void addReturnHotspot(String signature){
  List<ValueBox> sigSpots=StringAnalysis.getReturnExpressions(signature);
  logger.debug("For signature " + signature + " got "+ sigSpots.size()+ " hotspots.");
  if (!sigSpots.isEmpty()) {
    addSignatureToHotspotMap(signature,new Hotspot(signature,sigSpots));
    hotspots.addAll(sigSpots);
  }
}

public void addReturnHotspot ( String signature ) { List < ValueBox > sigSpots = StringAnalysis . getReturnExpressions ( signature ) ; logger . debug ( "For signature " + signature + " got " + sigSpots . size ( ) + " hotspots." ) ; if ( ! sigSpots . isEmpty ( ) ) { addSignatureToHotspotMap ( signature , new Hotspot ( signature , sigSpots ) ) ; hotspots . addAll ( sigSpots ) ; } }
add a hotspot for methods that return a sting .
