C# UWP/WinRT Google Drive: Get Starting pageToken for Listing Future Changes

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Gets the starting pageToken for listing future changes.

Documentation: https://developers.google.com/drive/v3/reference/changes/getStartPageToken

Chilkat.Rest rest = new Chilkat.Rest();
bool success;

//   Provide a previously obtained OAuth2 access token.
Chilkat.OAuth2 oauth2 = new Chilkat.OAuth2();
oauth2.AccessToken = "OAUTH2_ACCESS_TOKEN";
rest.SetAuthOAuth2(oauth2);

success = await rest.ConnectAsync("www.googleapis.com",443,true,true);
if (success != true) {
    Debug.WriteLine(rest.LastErrorText);
    return;
}

rest.AddQueryParam("teamDriveId","0AEd3EhGff2SaUk9PVA");
rest.AddQueryParam("supportsTeamDrives","true");

Chilkat.StringBuilder sbJson = new Chilkat.StringBuilder();
success = await rest.FullRequestNoBodySbAsync("GET","/drive/v3/changes/startPageToken",sbJson);
if (success != true) {
    Debug.WriteLine(rest.LastErrorText);
    return;
}

if (rest.ResponseStatusCode != 200) {
    Debug.WriteLine("Received error response code: " + Convert.ToString(rest.ResponseStatusCode));
    Debug.WriteLine("Response body:");
    Debug.WriteLine(sbJson.GetAsString());
    return;
}

Chilkat.JsonObject json = new Chilkat.JsonObject();
json.LoadSb(sbJson);

//  The following code parses the JSON response.
//  A sample JSON response is shown below the sample code.
string kind;
string startPageToken;

kind = json.StringOf("kind");
startPageToken = json.StringOf("startPageToken");

Debug.WriteLine("Example Completed.");

Sample JSON Response Body

{
  "kind": "drive#startPageToken",
  "startPageToken": "13"
}