public void generateRetrievalUrl(
        com.google.cloud.visionai.v1.GenerateRetrievalUrlRequest request,
        io.grpc.stub.StreamObserver<com.google.cloud.visionai.v1.GenerateRetrievalUrlResponse>
            responseObserver) {
      io.grpc.stub.ClientCalls.asyncUnaryCall(
          getChannel().newCall(getGenerateRetrievalUrlMethod(), getCallOptions()),
          request,
          responseObserver);
    }
<pre>
Generates a signed url for downloading the asset.
For video warehouse, please see comment of UploadAsset about how to allow
retrieval of cloud storage files in a different project.
</pre>
java-visionai/grpc-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/WarehouseGrpc.java