code: public static RoutingStrategy getRoutingStrategy(String attributeValue) throws StrategyException {
          TaskInstanceStrategyFactory factory = getInstance();
          String className = factory.getStrategyClassName(attributeValue, StrategyType.RoutingStrategy);
          RoutingStrategy strategy = (RoutingStrategy) factory.getStrategyInstance(RoutingStrategy.class, className, null);
          return strategy;
      }
docs: Returns a workgroup routing strategy instance based on an attribute value
  which can consist of either the routing strategy logical name, or an xml document.
  @param attributeValue
  @return the routing strategy implementor instance