def METHOD_NAME(self) -> Sequence[int]:
    """
    Returns the face stream awaited by vtk, but in a python container.
    The content can be used, once converted to a vtkIdList, to define another polyhedron in vtk.
    :return: The face stream in a python container.
    """
    result = [len(self.__data)]
    for face_nodes in self.__data:
        result.append(len(face_nodes))
        result += face_nodes
    return tuple(result)