Channel::__construct

public function __construct(string $sender, array $channelInfo, array $fromList, array $toList, int $userId)
{
	if (!is_a($sender, ICanSendMessage::class, true))
	{
		throw new ArgumentTypeException('sender', ICanSendMessage::class);
	}
	$this->sender = $sender;

	$this->channelInfo = $channelInfo;

	foreach ($fromList as $from)
	{
		if (!($from instanceof Correspondents\From))
		{
			throw new ArgumentTypeException('from', Correspondents\From::class);
		}
		$this->fromList[] = $from;
	}

	foreach ($toList as $to)
	{
		if (!($to instanceof Correspondents\To))
		{
			throw new ArgumentTypeException('to', Correspondents\To::class);
		}
		$this->toList[] = $to;
	}

	$this->userId = $userId;
}