title: Super to merge hash from parent class
body: <p>I have the following private method in V6 of my API:</p>
  
  <pre><code>def format_rentals(rentals)
    rentals.map do |rental|
      {
        start_time: rental.reservation_start_time.to_i,
         end_time: rental.reservation_end_time.to_i
       }
   end
  </code></pre>
  
  <p>On V10 of the API.</p>
  
  <p>V10 inherits from V9, V9 from V8, so on... </p>
  
  <p>I would like to a new attribute to the method. </p>
  
  <p>is there a way to not cut and paste the whole method onto V10 and then add the new attribute. </p>
  
  <p>What I don't want to do:</p>
  
  <pre><code>def format_rentals(rentals)
    rentals.map do |rental|
      {
        start_time: rental.reservation_start_time.to_i,
        end_time: rental.reservation_end_time.to_i,
        status: rental.status ### Adding this on V10
  
       }
   end
  </code></pre>
  
  <p>I would love to call super and merge to the hash, so far I've tried: </p>
  
  <pre><code>def format_rentals(rentals)
    rentals.map do |rental|
      super.merge(status: rental.status)
     end
  end
  </code></pre>
  
  <p>I probably don't have the syntax correct... Thanks for the help!</p>