object/spring/11 matches the site

public static HumanMadeObject Spring_IIIF_Image()
{
    var spring = new HumanMadeObject()
        .WithContext()
        .WithId("https://linked.art/example/object/spring/11")
        .WithLabel("Jeanne (Spring) by Manet")
        .WithClassifiedAs(Aat.Painting, Aat.TypeOfWork);

    spring.IdentifiedBy = [new Name("Jeanne (Spring)")];

    var visual = new VisualItem();
    var digitalImage = new DigitalObject()
        .WithClassifiedAs(Aat.DigitalImage);
    digitalImage.AccessPoint = [
        new DigitalObject().WithId("https://media.getty.edu/iiif/image/8094f61e-e458-42bd-90cf-a0ed0dcc90b9/full/full/0/default.jpg")
    ];

    digitalImage.DigitallyAvailableVia = [
        new IIIFImageService(
            Image.Version3,
            "https://media.getty.edu/iiif/image/8094f61e-e458-42bd-90cf-a0ed0dcc90b9")
        ];

    visual.DigitallyShownBy = [digitalImage];
    spring.Representation = [visual];

    return spring;
}

• Metatype classification The second argument classifies the first, not the object: WithClassifiedAs(Aat.Description, Aat.Statement) says this is a Description, and Description is a kind of Statement. The Plain C# form shows the nesting.

var humanMadeObject = new HumanMadeObject
{
    Context = ["https://linked.art/ns/v1/linked-art.json"],
    Id = "https://linked.art/example/object/spring/11",
    Label = "Jeanne (Spring) by Manet",
    ClassifiedAs =
    [
        new Type("http://vocab.getty.edu/aat/300033618", "Painting")
        {
            ClassifiedAs = [Aat.TypeOfWork],
        },
    ],
    IdentifiedBy = [new Name("Jeanne (Spring)")],
    Representation =
    [
        new VisualItem
        {
            DigitallyShownBy =
            [
                new DigitalObject
                {
                    ClassifiedAs = [Aat.DigitalImage],
                    AccessPoint =
                    [
                        new DigitalObject
                        {
                            Id = "https://media.getty.edu/iiif/image/8094f61e-e458-42bd-90cf-a0ed0dcc90b9/full/full/0/default.jpg",
                        },
                    ],
                    DigitallyAvailableVia =
                    [
                        new DigitalService
                        {
                            AccessPoint =
                            [
                                new DigitalObject
                                {
                                    Id = "https://media.getty.edu/iiif/image/8094f61e-e458-42bd-90cf-a0ed0dcc90b9",
                                },
                            ],
                            ConformsTo =
                            [
                                new InformationObject
                                {
                                    Id = "http://iiif.io/api/image",
                                },
                            ],
                            Format = "application/ld+json;profile='http://iiif.io/api/image/3/context.json'",
                        },
                    ],
                },
            ],
        },
    ],
};

Generated from the object the example builds: every property that is set, as object initialisers, with the vocabulary constants where a term is in the registry. The fluent helpers are a convenience, not a requirement; this form and the one as written produce the same JSON.