code: public static Field findField(Class clazz, String name) {
          return findField(clazz, name, null);
      }
docs: Attempt to find a {@link Field field} on the supplied {@link Class} with
  the supplied <code>name</code>. Searches all superclasses up to
  {@link Object}.
  
  @param clazz
  the class to introspect
  @param name
  the name of the field
  @return the corresponding Field object, or <code>null</code> if not found