title: Get parent node in android firebase
body: <p>This is my current code. How can I get the parent node of the first name </p>
  
  <p><img src="https://i.stack.imgur.com/Khpui.png" alt="my Firebase DB"></p>
  
  <pre><code>final Query userQuery = mRef.orderByChild("First Name");
  
      userQuery.addChildEventListener(new ChildEventListener() {
          @Override
          public void onChildAdded(DataSnapshot dataSnapshot, String s) {
              map.clear();
              for (DataSnapshot child: dataSnapshot.getChildren())
              {
                  String key = child.getKey().toString();
                  String value = child.getValue().toString();
                  map.put(key,value);
              }
  </code></pre>