FieldTable::deleteByStageId

static function deleteByStageId(int $stageId): Result
{
	$result = new Result();

	$list = static::getList([
		'filter' => [
			'=STAGE_ID' => $stageId,
		],
	]);

	while($item = $list->fetch())
	{
		$deleteResult = static::delete($item['ID']);
		if(!$deleteResult->isSuccess())
		{
			$result->addErrors($deleteResult->getErrors());
		}
	}

	return $result;
}