if (Collations.indexOf(context.getDefaultCollator(), s1, s2) > -1)
Collator collator = getCollator(contextSequence, contextItem, 3); if (Collations.indexOf(collator, s1, s2) > -1)
	public Sequence eval(		Sequence contextSequence,		Item contextItem)		throws XPathException {		if (contextItem != null)			contextSequence = contextItem.toSequence();		String s1 =			getArgument(0)				.eval(contextSequence)				.getStringValue();		String s2 =			getArgument(1)				.eval(contextSequence)				.getStringValue();		if (Collations.indexOf(context.getDefaultCollator(), s1, s2) > -1)			return BooleanValue.TRUE;		else			return BooleanValue.FALSE;	}