code: public static <T extends Enum<T>> T random(Class<T> enumClass) {
      EnumSet<T> enums = EnumSet.allOf(enumClass);
      return IterableUtils.randomFrom(enums);
    }
docs: Returns a random element from the given enum class.
  
  @param enumClass enum class to return random element from
  @param <T> the type of the given enum class
  @return random element from the given enum class
  @throws IllegalArgumentException if the given enumClass has no values