public PIConstructor(String pi) throws XPathException {
public PIConstructor(StaticContext context, String pi) throws XPathException { super(context);
	public PIConstructor(String pi) throws XPathException {		int p = pi.indexOf(' ');		if(p < 0)			throw new XPathException("Syntax error in processing instruction");		target = pi.substring(0, p);		if(++p < pi.length())			data = pi.substring(p);	}