Merge "Remove unnecessary if-else statement from TextUtils#isEmpty. "

     * @return true if str is null or zero length

     */

    public static boolean isEmpty(@Nullable CharSequence str) {

        if (str == null || str.length() == 0)

            return true;

        else

            return false;

        return str == null || str.length() == 0;

    }

    /** {@hide} */