public final UnaryCallable<DeleteCollectionRequest, Operation> deleteCollectionCallable() {
    return stub.deleteCollectionCallable();
  }
Deletes a collection.

<p>Sample code:

<pre>{@code
// This snippet has been automatically generated and should be regarded as a code template only.
// It will require modifications to work:
// - It may require correct/in-range values for request initialization.
// - It may require specifying regional endpoints when creating the service client as shown in
// https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
try (WarehouseClient warehouseClient = WarehouseClient.create()) {
  DeleteCollectionRequest request =
      DeleteCollectionRequest.newBuilder()
          .setName(
              CollectionName.of("[PROJECT_NUMBER]", "[LOCATION]", "[CORPUS]", "[COLLECTION]")
                  .toString())
          .build();
  ApiFuture<Operation> future = warehouseClient.deleteCollectionCallable().futureCall(request);
  // Do something.
  future.get();
}
}</pre>
java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/WarehouseClient.java