Hi,

I'm using this client library with google-auth to make calls to several Google APIs (Drive mainly), it works fine however it seems that when using a Batch request it doesn't use the credentials of each request in the batch, only the credentials from the first one.

Which means that when I impersonate two different users in two different requests in the same batch, both requests are made impersonating the first user.

For example here's how I proceed to list the files of two users:

creds_one = google.oauth2.service_account.Credentials.from_service_account_file(path_to_json, scopes=scopes, subject='user1@xxx.com')
creds_two = google.oauth2.service_account.Credentials.from_service_account_file(path_to_json, scopes=scopes, subject='user2@xxx.com')

drive_service_one = build('drive', 'v3', credentials=creds_one)
drive_service_two = build('drive', 'v3', credentials=creds_two)

_batch = BatchHttpRequest()
_batch.add(request=drive_service_one.files().list(), request_id='u1')
_batch.add(request=drive_service_two.files().list(), request_id='u2')

_batch.execute()

What I observe in this case is that both requests return the list of files from the first user.
Am I missing something here ?

Thanks