code: private <T extends Describable<T>>
      Descriptor<T> findDescriptor(String shortClassName, Collection<? extends Descriptor<T>> descriptors) {
          String name = '.'+shortClassName;
          for (Descriptor<T> d : descriptors) {
              if(d.clazz.getName().endsWith(name))
                  return d;
          }
          return null;
      }
docs: Finds a descriptor that has the specified name.