public static <T extends DomElement> T addElementAfter(@NotNull final T anchor) {
final DomElement parent = anchor.getParent();
final DomCollectionChildDescription childDescription =
(DomCollectionChildDescription) anchor.getChildDescription();
assert parent != null;
final List<? extends DomElement> list = childDescription.getValues(parent);
final int i = list.indexOf(anchor);
assert i >= 0;
return (T) childDescription.addValue(parent, i + 1);
}
