public async Task Delete()
{
var msg = await Context.Channel.SendMessageAsync($"{Emojis.Warn} Are you sure you want to delete your system? If so, reply to this message with your system's ID (`{Context.SenderSystem.Hid}`).\n**Note: this action is permanent.**");
var reply = await Context.AwaitMessage(Context.Channel, Context.User, timeout : TimeSpan.FromMinutes(1));
if (reply.Content != Context.SenderSystem.Hid)
{
throw new PKError($"System deletion cancelled. Note that you must reply with your system ID (`{Context.SenderSystem.Hid}`) *verbatim*.");
}
await Systems.Delete(Context.SenderSystem);
await Context.Channel.SendMessageAsync($"{Emojis.Success} System deleted.");
await ProxyCache.InvalidateResultsForSystem(Context.SenderSystem);
}