code: public static <T extends Enum<T>> Optional<T> getIfPresent(Class<T> enumClass, String value) {
      checkNotNull(enumClass);
      checkNotNull(value);
      return Platform.getEnumIfPresent(enumClass, value);
    }
docs: Returns an optional enum constant for the given type, using {@link Enum#valueOf}. If the
  constant does not exist, {@link Optional#absent} is returned. A common use case is for parsing
  user input or falling back to a default enum constant. For example, {@code
  Enums.getIfPresent(Country.class, countryInput).or(Country.DEFAULT);}
  
  @since 12.0