code: public Set<String> getAllHandlers(EndpointConfig config) {
        Set<String> set = new HashSet<String>();
        if (config != null) {
           for (UnifiedHandlerChainMetaData uhcmd : config.getPreHandlerChains()) {
              for (UnifiedHandlerMetaData uhmd : uhcmd.getHandlers()) {
                 set.add(uhmd.getHandlerClass());
              }
           }
           for (UnifiedHandlerChainMetaData uhcmd : config.getPostHandlerChains()) {
              for (UnifiedHandlerMetaData uhmd : uhcmd.getHandlers()) {
                 set.add(uhmd.getHandlerClass());
              }
           }
        }
        return set;
     }
docs: Returns a set of full qualified class names of the handlers from the specified endpoint config
  
  @param    The config to get the handler class names of
  @return   A set of full qualified class names of the handlers from the specified endpoint config