public static void checkValidCommentText(String text) {
if (text == null) throw new NullPointerException("Text cannot be null");
if (!XmlGrammar.xmlCommentText().matcher(text).matches())
throw new IllegalArgumentException("Not a valid XML Comment text");
}
public static void checkValidXmlName(String name) {
if (name == null) throw new NullPointerException("Name cannot be null");
if (!XmlGrammar.xmlName().matcher(name).matches())
throw new IllegalArgumentException("Not a valid XML Name");
}