if (_allValidTemplates == null) {
Vector templates = new Vector();
int size = _includedStylesheets.size();
for (int i = 0; i < size; i++) {
Stylesheet included =(Stylesheet)_includedStylesheets.elementAt(i);
templates.addAll(included.getAllValidTemplates());
}
templates.addAll(_templates);
// Cache results in top-level stylesheet only
if (_parentStylesheet != null) {