XrmQuery support for multi-level expand of single-valued navigation properties

[vandenberghev]

The Dataverse documentation states that multilevel expands are supported: https://docs.microsoft.com/en-us/powerapps/developer/data-platform/webapi/retrieve-related-entities-query#multi-level-expand-of-single-valued-navigation-properties

I believe drilling through like this is currently not supported in XrmQuery?
The only way I know, is to use retrieveRelated and expand (once) on one of the related entity's fields.

It would be nice to have support for true, deeper multi-level expands, to avoid having to fetch data in multiple round-trips.