I am trying to import project permissions already granted to GCP users / service accounts by using an import block as defined below (cf. doc) :

import {
  id = "{{project_id}} roles/viewer user:[email protected]"
  to = google_project_iam_member.default
} 

It works well for one role at a time. However, I have many users and roles to retrieve.
Is is possible to do it a better way ?

Thanks for your help.