code: def ReadFileObject(self, artifacts_reader, file_object):
      
      for artifact_definition in artifacts_reader.ReadFileObject(file_object):
        self.RegisterDefinition(artifact_definition)
docs: Reads artifact definitions into the registry from a file-like object.
  
      Args:
        artifacts_reader (ArtifactsReader): an artifacts reader.
        file_object (file): file-like object to read from.