}
/** Return the right null value according to type of property*/
public String attributeNullValue() throws XDocletException {
String type = attributeType();
if (type == null) throw new XDocletException("Missing(or wrong) attribute 'type' in property declaration.");
if (type.equals("boolean")) return("false");
if (type.equals("byte")) return("0");
if (type.equals("short")) return("0");
if (type.equals("int")) return("0");
if (type.equals("long")) return("0");