/**
* Returns true if both this node and $otherNode are root, leaf or child (same tree scope)
*
* @param TreeModel $otherNode
*
* @return bool
*/
public function inSameScope(TreeModel $otherNode)
{
if ($this->isLeaf()) {
return $otherNode->isLeaf();
} elseif ($this->isRoot()) {
return $otherNode->isRoot();
} elseif ($this->isChild()) {
return $otherNode->isChild();
} else {
return false;
}
}