public OperationCallSettings.Builder<DeleteCollectionRequest, Empty, DeleteCollectionMetadata>
        deleteCollectionOperationSettings() {
      return deleteCollectionOperationSettings;
    }
Returns the builder for the settings used for calls to deleteCollection.
java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/WarehouseStubSettings.java