How to get all data out of the Azure Devops API when multiple API calls are required

Here is the code that ended up working for me. Put this in a Power Query function that I called.

= () =>
    let
        baseUrl = "https://dev.azure.com/{organization}/{project}/_apis/git/pullrequests",
        pageSize = 1000,

        // Function to get a single page
        GetPage = (skip as number) =>
            let
                url = baseUrl & "&$top=" & Text.From(pageSize) & "&$skip=" & Text.From(skip) & "&api-version=7.1-preview.1",
                response = Json.Document(Web.Contents(url)),
                values = response[value]
            in
                values,

        // Generate list of pages
        PageGenerator = List.Generate(
            () => [page = 0, result = GetPage(0)],
            each List.Count([result]) > 0,
            each [page = [page] + 1, result = GetPage(([page] + 1) * pageSize)],
            each [result]
        ),

        // Flatten the list of lists
        AllResults = List.Combine(PageGenerator),

        // Convert to table
        ResultTable = Table.FromList(AllResults, Splitter.SplitByNothing(), null, null, ExtraValues.Error)
    in
        ResultTable