FormVkontakte::loadLeads

public function loadLeads($formId): Result
{
	if (!isset($formId) || !isset($this->accountId))
	{
		return (new Result())
			->addError(new Error('Can not load leads'));
	}

	$limit = self::LIMIT_DEFAULT;
	$response = $this->loadLeadsByForm($formId,
		[
			'limit' => $limit,
			'offset' => 0,
		]
	);

	if (!$response->isSuccess())
	{
		return (new Result())
			->addError(new Error('Can not load leads'));
	}

	$leads = $response->getData();
	if (count($leads) === $limit)
	{
		$limit = self::LIMIT_MAX;
		while (true)
		{
			$response = $this->loadLeadsByForm($formId, [
				'limit' => $limit,
				'offset' => count($leads),
			]);

			if (!$response->isSuccess())
			{
				break;
			}

			$leads = array_merge($leads, $response->getData());

			if (count($response->getData()) < $limit)
			{
				break;
			}
		}
	}

	return (new Result())->setData($leads);
}