public DiscordChannel WithUpdatedSubscribedArtist(SubscribedArtist subscribedArtits) =>
new DiscordChannel(this.Id,
this.GuildId,
this.Ignore,
this.CurrentArtistOptions,
this.SubscribedArtists.Select(artist => artist.Id == subscribedArtits.Id ? subscribedArtits : artist));
public DiscordChannel WithSubscribedArtistAdded(SubscribedArtist newArtist) => new DiscordChannel(this.Id,
this.GuildId,
this.Ignore,
this.CurrentArtistOptions,
this.SubscribedArtists.Concat(new SubscribedArtist[] { newArtist }));