Loading full objects when reading open API document

[salmanbabri]

Hi, I've tried the example given in the brief documentation.

var httpClient = new HttpClient
{
    BaseAddress = new Uri("https://raw.githubusercontent.com/OAI/OpenAPI-Specification/")
};

var stream = await httpClient.GetStreamAsync("master/examples/v3.0/petstore.yaml");
var openApiDocument = new OpenApiStreamReader().Read(stream, out var diagnostic);

When I inspect the returned object, it is mostly empty, with no tags, empty OpenApiItem object etc. Is there a way to load a fully detailed object with all the information present in the original yaml/json?