Reaction::deleteAction

public function deleteAction(Message $message, string $reaction): ?array
{
	$reaction = mb_strtoupper($reaction);
	$service = new ReactionService($message);
	$reactResult = $service->deleteReaction($reaction);

	if (!$reactResult->isSuccess())
	{
		$this->addErrors($reactResult->getErrors());

		return null;
	}

	return [];
}