public com.google.common.util.concurrent.ListenableFuture<
            com.google.cloud.vision.v1p4beta1.ListProductsInProductSetResponse>
        listProductsInProductSet(
            com.google.cloud.vision.v1p4beta1.ListProductsInProductSetRequest request) {
      return io.grpc.stub.ClientCalls.futureUnaryCall(
          getChannel().newCall(getListProductsInProductSetMethod(), getCallOptions()), request);
    }
<pre>
Lists the Products in a ProductSet, in an unspecified order. If the
ProductSet does not exist, the products field of the response will be
empty.
Possible errors:
* Returns INVALID_ARGUMENT if page_size is greater than 100 or less than 1.
</pre>
java-vision/grpc-google-cloud-vision-v1p4beta1/src/main/java/com/google/cloud/vision/v1p4beta1/ProductSearchGrpc.java