Task::updateAction

public function updateAction(\CTaskItem $task, array $fields, array $params = []): ?array
{
	$fields = $this->filterFields($fields);
	$fields = $this->formatDateFieldsForInput($fields, $params);
	$fields = $this->processFiles($task->getId(), $fields);
	$fields = $this->processCrmElements($fields);

	try
	{
		//todo: tmp, remove after internalizer is injected
		$fields = $this->removeReferences($fields);
		$task->update($fields, $params);
	}
	catch (\Exception $exception)
	{
		if ($errors = unserialize($exception->getMessage(), ['allowed_classes' => false]))
		{
			$error = $errors[0];
			$this->addError(new Error($error['text'], $error['id']));
		}
		else
		{
			$this->addError(new Error($exception->getMessage()));
		}

		return null;
	}

	if (Loader::includeModule('pull'))
	{
		MobileCounter::send($this->getCurrentUser()->getId());
	}

	return $this->getAction($task);
}