/// <summary>
/// Registers a handler to handle when a new user joins the server for the first time.
/// </summary>
/// <param name="userJoinsServerHandler"></param>
public void Register(IUserJoinsServerHandler userJoinsServerHandler)
{
if (userJoinsServerHandler == null)
{
throw new ArgumentNullException(nameof(userJoinsServerHandler));
}
userJoinsServerHandler.Init(this, _decoratedDataStore);
_userJoinsServerHandlers.Add(userJoinsServerHandler);
}
