/// <summary>
/// Creates the notification email for the specified event and user.
/// </summary>
/// <param name="event">The event.</param>
/// <param name="user">The user.</param>
/// <returns>The email subject and body.</returns>
public (string, string) CreateNotificationEmail(Event @event, User user)
{
if (@event.Id != EventId)
{
throw new InvalidOperationException("The specified event is not valid for this notification.");
}
if (user.Id != UserId)
{
throw new InvalidOperationException("The specified user is not valid for this notification.");
}
return(NotificationType.CreateNotificationEmail(@event, user));
}