title: Is it ok to point an edit and create attribute route to the same action
body: <p>For example. In this case the action "CreateProduct" would be referenced by both urls. If there is a productKey available then it would edit the existing product, otherwise, it would create a new product.</p>
  
  <pre><code>[Route("products/create")]
  [Route("products/edit/{productKey}"]
  public ActionResult CreateProduct(string productKey){
      if(productKey)
          edit...
      else
          create...
  }
  </code></pre>