code: def get(self, index, snap_id):
      if index in self.snaps[snap_id]:
          return self.snaps[snap_id][index]
      else:
          return 0
  
label_desc: Use image node_id 4 for calling the SnapshotArray obj's underlying member method code with example usage: obj.get(index, snap_id) and returns: self, int