if (host instanceof CompositeEntity) {
try {
CompositeEntity clone = (CompositeEntity) host.clone();
clone.removeAllEntities();
clone.removeAllRelations();
return clone.exportMoMLPlain();
} catch (CloneNotSupportedException e) {
throw new TransformationException(
"Cannot clone composite entity " + host.getFullName()
+ ".", e);
}