That would work if the API we were querying could return results of different types in response to a single query. But we might have a single operation that nee

That would work if the API we were querying could return results of different types in response to a single query. But we might have a single operation that needs to know a couple of FooIds, a BarId, and a BazId, and they all need to be at least three requests against the remote system.