code: public static PrioritizationStrategy getPrioritizationStrategy(String attributeValue) throws StrategyException {
          TaskInstanceStrategyFactory factory = getInstance();
          String className = factory.getStrategyClassName(attributeValue, StrategyType.PrioritizationStrategy);
          PrioritizationStrategy strategy = (PrioritizationStrategy) factory.getStrategyInstance(PrioritizationStrategy.class, className, null);
          return strategy;
      }
docs: Returns a Prioritization 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 Prioritization strategy implementor instance