/**
* Get the ISchemaAttribute corresponding to this IDocumentAttributeNode
*
* @param attr
* @param extensionPoint the extension point of the schema, if <code>null</code> it will be
* deduced
* @return the ISchemaAttribute for <code>attr</code>
*/
public static ISchemaAttribute getSchemaAttribute(
IDocumentAttributeNode attr, String extensionPoint) {
ISchemaElement ele = getSchemaElement(attr.getEnclosingElement(), extensionPoint);
if (ele == null) return null;
return ele.getAttribute(attr.getAttributeName());
}
