public DomCollectionChildDescription getCollectionChildDescription(
     @NonNls String tagName, @NonNls String namespace) {
   checkInitialized();
   return myCollections.getDescription(tagName, namespace);
 }
 public DomAttributeChildDescription getAttributeChildDescription(
     @NonNls String attributeName, @NonNls String namespace) {
   checkInitialized();
   return myAttributes.getDescription(attributeName, namespace);
 }
 public DomFixedChildDescription getFixedChildDescription(
     @NonNls String tagName, @NonNls String namespace) {
   checkInitialized();
   return myFixeds.getDescription(tagName, namespace);
 }