https://docs.cloud.google.com/java/docs/reference/google-cloud-datastore/latest/com.google.datastore.admin.v1.DeleteIndexRequest.Builder
Class DeleteIndexRequest.Builder (2.40.0) | Java client libraries | Google Cloud Documentation
https://docs.cloud.google.com/php/docs/reference/cloud-firestore/latest/Admin.V1.DeleteIndexRequest
Cloud Firestore V1 Client - Class DeleteIndexRequest (2.2.0-RC1) | PHP client libraries | Google...
cloud firestore