code: def IterateAllClientSnapshots(self, min_last_ping=None, batch_size=50000):
      
      all_client_ids = self.ReadAllClientIDs(min_last_ping=min_last_ping)
  
      for batch in collection.Batch(all_client_ids, batch_size):
        res = self.MultiReadClientSnapshot(batch)
        for snapshot in itervalues(res):
          if snapshot:
            yield snapshot
docs: Iterates over all available clients and yields client snapshot objects.
  
      Args:
        min_last_ping: If provided, only snapshots for clients with last-ping
          timestamps newer than (or equal to) the given value will be returned.
        batch_size: Always reads <batch_size> snapshots at a time.
  
      Yields:
        An rdfvalues.objects.ClientSnapshot object for each client in the db.