title: How to read the nested maps from fireStore database from android
body: <p><a href="https://i.stack.imgur.com/ni85k.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ni85k.png" alt="enter image description here" /></a></p>
  <p>In the above image, I have a map that contains an arrays list of 2020, 2021, etc. I want to display the arrays data in RecyclerView. How to do that in android?</p>
  <p>Also how to retrieve data if a map contains a list of maps. I'm able to get the documents with field names, but struggling with how to get maps with field names and data in that maps.</p>