private async Task <List <ListingCard> > Craigslist()
        {
            List <ListingCard>       listingCards = new List <ListingCard>();
            List <CraigslistListing> listings     = await manager.GetCraigslist();

            if (listings != null)
            {
                foreach (CraigslistListing listing in listings)
                {
                    listingCards.Add(new ListingCard()
                    {
                        id            = listing.id,
                        title         = listing.title,
                        description   = "",
                        condition     = "",
                        price         = listing.price,
                        published_at  = DateTime.Parse(listing.post_date),
                        photo         = listing.photo,
                        listingLink   = listing.link,
                        resourcePhoto = "craigslist.png"
                    });
                }
            }
            return(listingCards);
        }