static void Main(string[] args)
        {
            new DB("assets");
            var client = new Client
            {
                Name   = "Marco Polo",
                Assets = new Asset[]
                {
                    new Asset {
                        Name = "asset one", Enabled = true
                    },
                    new Asset {
                        Name = "asset two", Enabled = true
                    },
                    new Asset {
                        Name = "asset three", Enabled = true
                    }
                }
            };

            client.Save();
            var clientID = client.ID;
            var result   = client.Collection()
                           .Where(c => c.ID == clientID)
                           .SelectMany(c => c.Assets)
                           .ToArray();

            Console.ReadKey();
        }