code: public Object getService(String interfaceClassName, String serviceClassName, String versionRange, Dictionary<String,String> filter)
      {
          return ClassServiceUtility.getClassService().getClassFinder(context).getClassBundleService(interfaceClassName, serviceClassName, versionRange, filter, -1);
      }
docs: Convenience method to get the service for this implementation class.
  @param interfaceClassName
  @return