public static void mergeDataModel(FormInstance parent, FormInstance child, TreeReference parentRef)
{
TreeElement parentNode = parent.resolveReference(parentRef);
//ugly
if (parentNode == null)
{
parentRef = parent.addNode(parentRef);
parentNode = parent.resolveReference(parentRef);
}
TreeElement childNode = child.getRoot();
int mult = parentNode.getChildMultiplicity(childNode.getName());
childNode.setMult(mult);
parentNode.addChild(childNode);
}