Method toString

base/src/main/java/net/time4j/Moment.java:1660–1666

()

     * @return  ISO-8601-formatted string
     */
    @Override
    public String toString() {

        String s; // racy single-check idiom
        return (s = this.iso8601) != null ? s : (this.iso8601 = this.toStringUTC(true));

    }

    /**
     * <p>Creates a formatted view of this instance taking into account