Component->lookup preskočí nadradený komponent v prvej úrovni

	public function lookup($type, $need = TRUE)
	{
		if (!isset($this->monitors[$type])) { // not monitored or not processed yet
			$obj = $this->parent;
			//...
			while ($obj !== NULL) {
				$parent = $obj->getParent();
				if ($type ? $obj instanceof $type : $parent === NULL) {
					break;
				}
				//...

	public function lookup($type, $need = TRUE)
	{
		//...
		if (!isset($this->monitors[$type])) { // not monitored or not processed yet
			$obj = $this->parent;
			//...
			while ($obj !== NULL) {
				if ($obj instanceof $type) break;
				//...
				$obj = $obj->getParent();
				if ($obj === $this) $obj = NULL; // prevent cycling
			}
			//...