It seems like you're looking for a Java client to download a product with vector graphics. However, the search results provided don't seem to be related to Java or a specific API.

If you could provide more context or clarify which API or service you're trying to use, I'd be happy to help you find the correct information.

That being said, one of the search results mentions @upstash/vector, which is an HTTP/REST based Vector DB client. It's possible that this library can be used to download vector graphics in Java.

Here's a brief snippet on how to use it:

import io.upstash.vector.VectorClient;

// Create a new VectorClient instance
VectorClient vectorClient = new VectorClient("https://your-vector-db.com");

// Download a product with vector graphics
vectorClient.getVector("product-id", "png").then((response) -> {
    // Handle the response
});

Please note that you'll need to replace https://your-vector-db.com with the actual URL of your Vector DB instance.

If this doesn't help, please provide more information about the API or service you're trying to use, and I'll do my best to assist you.