public static Emoji getForAlias(String alias) {
    if (alias == null || alias.isEmpty()) {
      return null;
    }
    return EMOJIS_BY_ALIAS.get(trimAlias(alias));
  }
Returns the {@link com.vdurmont.emoji.Emoji} for a given alias.

@param alias the alias

@return the associated {@link com.vdurmont.emoji.Emoji}, null if the alias
is unknown
src/main/java/com/vdurmont/emoji/EmojiManager.java