code: @Nullable
  	public Age getAge(int tag)
      {
          final String ageString = getString(tag);
          if (ageString==null)
              return null;
          return Age.fromPanasonicString(ageString);
  	}
docs: Attempts to convert the underlying string value (as stored in the directory) into an Age object.
  @param tag The tag identifier.
  @return The parsed Age object, or null if the tag was empty of the value unable to be parsed.