public Object becomeRoot(Token newRoot, Object oldRoot) {
Object n = this.create(newRoot);
adaptor.becomeRoot(n, oldRoot);
dbg.becomeRoot(newRoot, oldRoot);
return n;
}
public Object becomeRoot(Object newRoot, Object oldRoot) {
Object n = adaptor.becomeRoot(newRoot, oldRoot);
dbg.becomeRoot(newRoot, oldRoot);
return n;
}