code: public static Parameter of(DateTimeFormat format, FormatOptions options, int index) {
      return new DateTimeParameter(options, index, format);
    }
docs: Returns a {@link Parameter} representing the given formatting options of the specified
  date/time formatting character. Note that a cached value may be returned.
  
  @param format specifier for the specific date/time formatting to be applied.
  @param options the validated formatting options.
  @param index the argument index.
  @return the immutable, thread safe parameter instance.