Correct me if I'm wrong but it appears that the admin-sdks's Users>list operation doesnt support searching users by ID (According to the docs here).
For example I use the Members api to get all the members of a given group. It returns a list or User Ids. The only way to fetch data about those users is to call the get operation for each user. Seems pretty inefficient to me.
How come this functionality is not implemented (or perhaps I'm missing something)?