code: def ProcessMessages(self, msgs=None, token=None):
      
      if not data_store.AFF4Enabled():
        return
  
      filestore_fd = aff4.FACTORY.Create(
          legacy_filestore.FileStore.PATH,
          legacy_filestore.FileStore,
          mode="w",
          token=token)
  
      for vfs_urn in msgs:
        with aff4.FACTORY.Open(vfs_urn, mode="rw", token=token) as vfs_fd:
          try:
            filestore_fd.AddFile(vfs_fd)
          except Exception as e:  # pylint: disable=broad-except
            logging.exception("Exception while adding file to filestore: %s", e)
docs: Process the new file and add to the file store.