title: How to get Parent Product Id from Child Id in Magento 2 api
body: <p>I want to get the parent product id from the child product id in Magento 2.
  Is there any API that can give this information? I see solutions in Php.
  But I am using c# as a backend language. And wants to fetch this information via API.</p>
  <p>Any input will be much appreciated.</p>
  <p>Thanks &amp; Regards</p>