public static async Task <Channel> GetOrCreateDmChannel(this IDiscordCache cache, DiscordApiClient rest, ulong recipientId)
{
if (cache.TryGetDmChannel(recipientId, out var cacheChannel))
{
return(cacheChannel);
}
var restChannel = await rest.CreateDm(recipientId);
await cache.SaveChannel(restChannel);
return(restChannel);
}