object/nightwatch/1 matches the site

public static HumanMadeObject NightWatch_1_Names()
{
    var nightWatch = new HumanMadeObject()
        .WithContext()
        .WithId("https://linked.art/example/object/nightwatch/1")
        .WithLabel("Night Watch by Rembrandt");

    var englishName = new Name("The Night Watch")
        .AsPrimaryName()
        .WithLanguage("300388277", "English", "en");
    var dutchName = new Name("De Nachtwacht")
        .AsPrimaryName()
        .WithLanguage("300388256", "Dutch", "nl");

    nightWatch.IdentifiedBy = [englishName, dutchName];

    return nightWatch;
}

• Role shortcuts AsPrimaryName, AsAccessionNumber and AsSystemAssignedNumber each add a single classification, with the AAT terms Primary Name, Accession Number and System Number.

var humanMadeObject = new HumanMadeObject
{
    Context = ["https://linked.art/ns/v1/linked-art.json"],
    Id = "https://linked.art/example/object/nightwatch/1",
    Label = "Night Watch by Rembrandt",
    IdentifiedBy =
    [
        new Name("The Night Watch")
        {
            Language = [Aat.English],
            ClassifiedAs = [Aat.PrimaryName],
        },
        new Name("De Nachtwacht")
        {
            Language = [Aat.Dutch],
            ClassifiedAs = [Aat.PrimaryName],
        },
    ],
};

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.