code: public static List<ObjectModelResolver> getResolvers() {
          if (resolvers == null) {
              synchronized (serviceLoader) {
                  if (resolvers == null) {
                      List<ObjectModelResolver> foundResolvers = new ArrayList<ObjectModelResolver>();
                      for (ObjectModelResolver resolver : serviceLoader) {
                          foundResolvers.add(resolver);
                      }
                      resolvers = foundResolvers;
                  }
              }
          }
  
          return resolvers;
      }
docs: Returns all found resolvers
  @return