GroupAction::loadSections

protected function loadSections(): void
{
	if ($this->sections === null)
	{
		$this->sections = [];
		if ($this->iblockId > 0)
		{
			$iterator = CIBlockSection::getTreeList(
				['IBLOCK_ID' => $this->iblockId],
				['ID', 'NAME', 'DEPTH_LEVEL', 'LEFT_MARGIN']
			);
			while ($row = $iterator->Fetch())
			{
				$this->sections[] = [
					'NAME' => str_repeat(' . ', $row['DEPTH_LEVEL']).$row['NAME'],
					'VALUE' => $row['ID']
				];
			}
			unset($row, $iterator);
		}
	}
}