static async Task DoWork()
    {
        // IDatabaseBox and IRestBox both inherit from IBox.
        IDatabaseBox database = MongoBox();
        IRestBox remote = WebApiBox();

        var customer = new Customer { Name = "John Doe" };
        var invoice = new Invoice { Number = "ABC/123" };

        // Insert<T> (and other CRUD methods) are all defined by IBox.
        await remote.Insert(customer);
        await database.Insert(invoice);

        // Lookups also work alike, no matter where and how data is stored.
        var brooklynCustomers = await database.Find<Customer>(c => c.Zip == "11201");

        var invoices = await remote.Find<Invoice>(
            inv => inv.Date >= DateTime.Now.AddDays(-10),
            new FindOptions<Invoice> { IfModifiedSince = DateTime.Now.Date }
            );

        Console.WriteLine($"We got back {brooklynCustomers.Count} customers and {invoices.Count} invoices");
    }

    static IDatabaseBox MongoBox()
    {
        return new MongoBox()
        {
            ConnectionString = "mongodb://localhost:27017/my_database",
            // In the context of database boxes, DataSources maps types to tables/collections.
            DataSources = new Dictionary<Type, string> {
                { typeof (Customer), "customers" },
                { typeof (Invoice), "invoices" }
            }
        };
    }
    static IRestBox WebApiBox()
    {
        return new WebApiBox()
        {
            BaseAddress = new Uri("https://myservice.com"),
            // In the context of rest boxes, DataSources maps types to endpoints.
            DataSources = new Dictionary<Type, string> {
                { typeof (Customer), "/api/customers" },
                { typeof (Invoice), "/api/invoices" }
            }
        };
    }