Can't use Expand to get singleValueExtendedProperties on a single email query

While trying to expand the singleValueExtendedProperties using the the following
Groups[groupId].Events.GetAsync there is no option to provide expand.

Steps to reproduce the behavior:

1. Go to Microsoft Graph Api explorer
2. Make a request using the following
3. https://graph.microsoft.com/v1.0/groups/[omitted]/events/?$expand=singleValueExtendedProperties($filter=id eq 'String {[omitted]} Name [omitted]')
4. Scroll down for C# code snippet
5. The following will not compile
   var result = await graphClient.Groups["{group-id}"].Events.GetAsync((requestConfiguration) => { requestConfiguration.QueryParameters.Expand = new string []{ "singleValueExtendedProperties($filter=id eq 'String {[omitted]} Name [omitted]')" }; });
   Expand does not exist

Expected behavior
Should be able to retrive a single event

Client version
5.38.0

Additional context
Is there any other way to achieve the desired out come

Start at the generated Groups["{group-id}"].Events.GetAsync request configuration shown in the report and compare its query parameters with the Graph API Explorer request. Check how singleValueExtendedProperties expansion is represented for this endpoint, then verify that the C# snippet compiles and sends the requested expand expression.