Using the SDK in a .NET Blazor WebApp

[purplepiranha]

I'm developing a product that will have a user login via their Microsoft Entra work account and then retrieve details about their organization.

It's a .NET 9 Blazor WebApp and the calls will be performed server side.

The only examples in Blazor a .NET Blazor WebApp that I've found use Microsoft.Identity.Web.DownstreamApi to call Graph. This works well, but I then have to create objects to map the response to.

It seems to me like this SDK should do that for me but I'm stuck at the 'Create a Microsoft Graph client object with an authentication provider' stage. The documentation states:

An instance of the GraphServiceClient class handles building requests, sending them to Microsoft Graph API, and processing the responses. To create a new instance of this class, you need to provide an instance of IAuthenticationProvider which can authenticate requests to Microsoft Graph.

Where do I get this IAuthenticationProvider from?

There seems to me to be a lack of real world examples of how to use the SDK. Maybe I'm just looking in the wrong places.