File::delete

static function delete($fileId, $entityId, $entityType)
{
	//@tmp log
	Debug::log(
		$entityId . '@' . $entityType,
		'fileId: ' . print_r($fileId, true) . '@' . print_r(BitrixMainDiagHelper::getBackTrace(15), true),
		'LANDING_FILE_MARK_DELETE'
	);

	$filter = array(
		'ENTITY_ID' => $entityId,
		'=ENTITY_TYPE' => $entityType
	);
	if ($fileId)
	{
		$filter['FILE_ID'] = $fileId;
	}
	$res = FileTable::getList(array(
		'select' => array(
			'ID', 'FILE_ID'
		),
		'filter' => $filter
	));
	while ($row = $res->fetch())
	{
		$resUpdate = FileTable::update(
			$row['ID'],
			array(
				'FILE_ID' => -1 * abs($row['FILE_ID'])
			)
		);
		$resUpdate->isSuccess();
	}
}