title: What would be REST way to get relevant resources?
body: <p>Let's say I have an API to get a product given an product ID as: <code>api/products/&lt;productid&gt;</code>.</p>
  <p>What would be a REST way to get <strong>relevant</strong> products given a product ID. I think I can use a query on the same endpoint as <code>api/products?id=&lt;productid&gt;</code>, but not sure if this is ideal or it might be confusing.</p>