code: public String getID(AptControlField control)
      {
          if (!needsUniqueID())
              return "\"" + control.getName() + "\""; 
  
          return "client.getClass() + \"@\" + client.hashCode() + \"." + control.getClassName() + "." + control.getName() + "\"";
      }
docs: Returns a unique ID for a control field