private static String getEmojiAsString(final int emoji) {
        return new String(Character.toChars(emoji)) + new String(Character.toChars(VariationSelectorEmoji));
    }
get emoji string from codepoint

@param emoji codepoint of the emoji to display
@return string emoji with protection from rendering as black-and-white glyphs
main/src/main/java/cgeo/geocaching/utils/EmojiUtils.java