/**
* Return an array with the last node we could reach and its nesting level
*
* @param Tree\Node $node
* @param integer $nesting
* @return array
*/
protected function determineDepth($node, $nesting = 0)
{
// Traverse back up the ancestry chain and add to the nesting level count
while ($parent = $node->parent()->first()) {
$nesting = $nesting + 1;
$node = $parent;
}
return array($node, $nesting);
}