GroupAction::initConfig

protected function initConfig()
{
	$iterator = IblockIblockTable::getList([
		'select' => [
			'ID',
			'SECTION_CHOOSER',
			'SECTIONS' => 'TYPE.SECTIONS'
		],
		'filter' => ['=ID' => $this->iblockId],
	]);
	$row = $iterator->fetch();
	if (!empty($row))
	{
		$this->iblockConfig['SECTIONS'] = $row['SECTIONS'];
		$this->iblockConfig['SECTION_CHOOSER'] = $row['SECTION_CHOOSER'];
	}
	unset($row, $iterator);
}