API provider — googleapis.com:recommender
curl \
-H "Authorization: Bearer $ACCESS_TOKEN" \
https://recommender.googleapis.com/v1beta1/{name}curl \
-H "Authorization: Bearer $ACCESS_TOKEN" \
https://recommender.googleapis.com/v1beta1/{parent}/insightscurl \
-H "Authorization: Bearer $ACCESS_TOKEN" \
https://recommender.googleapis.com/v1beta1/{parent}/recommendations