title: Firebase push() in iOS
body: <p>Is there any equivalent of Firebase.push() method for iOS API which is available in API for Javascript or Java ?</p>
  
  <p>I couldn't find it in API reference for iOS.</p>
  
  <p>What I need is to push data to the new child location based on timestamp (I prefer server not client timestamp) and return that reference in the block.</p>