@Override
  public @Nullable DomCollectionChildDescription getCollectionChildDescription(final @NonNls String tagName, final @NonNls String namespaceKey) {
    buildMethodMaps();
    return myCollections.getDescription(tagName, namespaceKey);
  }
@Override
  public @Nullable DomCollectionChildDescription getCollectionChildDescription(final @NonNls String tagName, final @NonNls String namespaceKey)