Custom Event arguments are not retrieved

I am trying to retrieve custom event data from Application Insights using this package: https://www.nuget.org/packages/Microsoft.Azure.ApplicationInsights

The custom event names are being correctly deserialized, but the custom event data (which is passed via a TelemetryClient object in another solution) isn’t. The data is available in the Azure portal, so there is either a bug in the API surface being used by this library or (more likely) the deserialization code.

Expected: EventsCustomEventResult.CustomDimensions and EventsCustomEventResult.CustomMeasurements are not null (ideally the additional properties should contain a list of string names and string pairs, respectively).

Actual: The object is null for custom events that do contain custom properties.

Repro: Ensure that custom events with additional properties exist in an ApplicationInsights instance (This is easily done with the TelemetryClient) and then run this code:

var activeDirectoryServiceSettings = new ActiveDirectoryServiceSettings
{
    AuthenticationEndpoint = new Uri("https://login.microsoftonline.com"),
    TokenAudience = new Uri("https://api.applicationinsights.io/"),
    ValidateAuthority = true
};

var serviceCredentials = ApplicationTokenProvider.LoginSilentAsync(
        domain: "< DOMAIN >",
        clientId: "< CLIENT ID >",
        secret: "< SECRET >",
        settings: activeDirectoryServiceSettings)
    .GetAwaiter()
    .GetResult();

_applicationInsightsDataClient = new ApplicationInsightsDataClient(serviceCredentials)
{
    AppId = "< APP ID >"
};

var events = _applicationInsightsDataClient.GetCustomEvents(TimeSpan.FromHours(72));

foreach (var e in events.Value)
{
    // EXPECTED:
    // e.CustomDimensions.AdditionalProperties != null
    // e.CustomMeasurements.AdditionalProperties != null
}

.NET Core SDK (reflecting any global.json): Version: 3.1.402 Commit: 9b5de826fd

Runtime Environment: OS Name: Windows OS Version: 10.0.19041 OS Platform: Windows RID: win10-x64 Base Path: C:\Program Files\dotnet\sdk\3.1.402\

[geneh]

The documentation has been updated. https://www.nuget.org/packages/Microsoft.Azure.ApplicationInsights has been deprecated.

[older]

@geneh It looks like the same fix which was applied to EventsResultDataCustomDimensions in 58a48f0 needs to be applied to EventsResultDataCustomMeasurements as well.