title: Get ID of one2many record added from backend
body: <p>I am writing/updating one2many records via function like below. Using sales as example..</p>
  <pre><code>next_order[0].order_line = [(0,0,{values})]
  </code></pre>
  <p>After this I have some recalculating routine being done in values. Now, I want to update values in the same one2many line created. How to fetch the ID of the same in the backend itself? Thanks for any help.</p>