curl --request GET \
  --url https://api.example.com/v1/groups:batchGet

{
  "groups": [
    {
      "name": "<string>",
      "title": "<string>",
      "description": "<string>",
      "members": [
        {
          "member": "<string>",
          "role": "ROLE_UNSPECIFIED"
        }
      ],
      "source": "<string>",
      "email": "<string>"
    }
  ]
}