private PagedEnumerator <Tuple <string, string> > TradeOffersBuySell(DiscordEmbedBuilder embed, Func <StoreComponent, TradeOffer, bool> filter, Func <Tuple <StoreComponent, TradeOffer>, string> context)
{
var sellOffers = TradeHelper.SellOffers(filter);
var groupedSellOffers = sellOffers.GroupBy(t => TradeHelper.StoreCurrencyName(t.Item1)).OrderBy(g => g.Key);
var buyOffers = TradeHelper.BuyOffers(filter);
var groupedBuyOffers = buyOffers.GroupBy(t => TradeHelper.StoreCurrencyName(t.Item1)).OrderBy(g => g.Key);
var fieldEnumerator = OffersToFields(groupedBuyOffers, groupedSellOffers, context).GetEnumerator();
var pagedFieldEnumerator = new PagedEnumerator <Tuple <string, string> >(fieldEnumerator, EMBED_CONTENT_CHARACTER_LIMIT, field => field.Item1.Length + field.Item2.Length);
pagedFieldEnumerator.ForEachInPage(field => { embed.AddField(field.Item1, field.Item2, true); });
return(pagedFieldEnumerator);
}