public com.google.common.util.concurrent.ListenableFuture<com.google.longrunning.Operation>
        importProductSets(com.google.cloud.vision.v1p4beta1.ImportProductSetsRequest request) {
      return io.grpc.stub.ClientCalls.futureUnaryCall(
          getChannel().newCall(getImportProductSetsMethod(), getCallOptions()), request);
    }
<pre>
Asynchronous API that imports a list of reference images to specified
product sets based on a list of image information.
The [google.longrunning.Operation][google.longrunning.Operation] API can be
used to keep track of the progress and results of the request.
`Operation.metadata` contains `BatchOperationMetadata`. (progress)
`Operation.response` contains `ImportProductSetsResponse`. (results)
The input source of this method is a csv file on Google Cloud Storage.
For the format of the csv file please see
[ImportProductSetsGcsSource.csv_file_uri][google.cloud.vision.v1p4beta1.ImportProductSetsGcsSource.csv_file_uri].
</pre>
java-vision/grpc-google-cloud-vision-v1p4beta1/src/main/java/com/google/cloud/vision/v1p4beta1/ProductSearchGrpc.java