/**
* Sets the "hidden" flag for this node.
*
* @param boolean $hidden If TRUE, this Node will be hidden
* @return void
* @api
*/
public function setHidden($hidden)
{
if (!$this->isNodeDataMatchingContext()) {
$this->materializeNodeData();
}
$this->nodeData->setHidden($hidden);
$this->context->getFirstLevelNodeCache()->flush();
$this->emitNodeUpdated($this);
}