/**
  * Append to operation internal handler
  * @param bool $append
  * @throws Exception
  */
 protected function insertIntoInternal($append)
 {
     $this->checkNode(false);
     $this->owner->setAttribute($this->parentAttribute, $this->node->getPrimaryKey());
     if ($this->sortable !== false) {
         if ($append) {
             $this->behavior->moveLast();
         } else {
             $this->behavior->moveFirst();
         }
     }
 }
 /**
  * Append to operation internal handler
  * @param bool $append
  * @throws Exception
  */
 protected function insertIntoInternal($append)
 {
     $this->checkNode(false);
     $item = $this->owner->getAttribute($this->itemAttribute);
     if ($item !== null) {
         $path = $this->node->getAttribute($this->pathAttribute);
         $this->owner->setAttribute($this->pathAttribute, $path . $this->delimiter . $item);
     }
     $this->owner->setAttribute($this->depthAttribute, $this->node->getAttribute($this->depthAttribute) + 1);
     if ($this->treeAttribute !== null) {
         $this->owner->setAttribute($this->treeAttribute, $this->node->getAttribute($this->treeAttribute));
     }
     if ($this->sortable !== false) {
         if ($append) {
             $this->behavior->moveLast();
         } else {
             $this->behavior->moveFirst();
         }
     }
 }