code: public static void setDirty(DirtyMarker aDirtyMarker, Object aObject1, Object aObject2)
      {
         if(aDirtyMarker == null)
            return;
         
         if(aObject1 == null || !aObject1.equals(aObject2))
            aDirtyMarker.setDirty(true);
         
      }
docs: if(aObject1 == null || !aObject1.equals(aObject2))
  aDirtyMarker.setDirty(true)
  
  @param aDirtyMarker
  @param aObject1
  @param aObject2