title: Firebase Realtime Database with Unity. Only want to fetch the latest added children under a specific node. (Not fetch the older ones)
body: <p>I am using Firebase Realtime Database to save some some links under a parent called - Links.</p>
  
  <p>Let's say there are 5 links and my app fetched them. And after few days I added 5 more. How can I make my app only check the latest 5 ones added and not the previous ones ?</p>
  
  <p>I have use OnValueChanged, ChildAdded, Child Removed etc. Nothing works the way I want. It checks all the children under Links which is wastage of bandwidth.</p>
  
  <p>I specifically want my app to only fetch the updated or new ones.</p>
  
  <p>I am using it with Unity. Any suggestions, please ?</p>