BaseBuilder::getParentFilter

protected function getParentFilter(?int $parentId): string
{
	$result = '';
	if ($parentId !== null)
	{
		if ($parentId === -1)
		{
			$result = $this->compileUrlParams([
				'find_section_section' => $parentId
			]);
		}
		elseif ($parentId >= 0)
		{
			$result = $this->compileUrlParams([
				'find_section_section' => $parentId,
				'SECTION_ID' => $parentId,
				'apply_filter' => 'Y'
			]);
		}
	}

	return $result;
}