public void listReferenceImages(
        com.google.cloud.vision.v1p3beta1.ListReferenceImagesRequest request,
        io.grpc.stub.StreamObserver<com.google.cloud.vision.v1p3beta1.ListReferenceImagesResponse>
            responseObserver) {
      io.grpc.stub.ClientCalls.asyncUnaryCall(
          getChannel().newCall(getListReferenceImagesMethod(), getCallOptions()),
          request,
          responseObserver);
    }
<pre>
Lists reference images.
Possible errors:
* Returns NOT_FOUND if the parent product does not exist.
* Returns INVALID_ARGUMENT if the page_size is greater than 100, or less
  than 1.
</pre>
java-vision/grpc-google-cloud-vision-v1p3beta1/src/main/java/com/google/cloud/vision/v1p3beta1/ProductSearchGrpc.java