int e0 = s0.next();
do { e0 = s0.next(); } while (e0 == 0);
    private final static boolean collationStartsWith(CollationElementIterator s0,             CollationElementIterator s1) {        while (true) {            int e1 = s1.next();            if (e1 == CollationElementIterator.NULLORDER) {                return true;            }            int e0 = s0.next();            if (e0 != e1) {                return false;            }        }    }