def get_change_history(request, run_id):
    """Get the list of changes to the fields of this run.

    :param int run_id: run ID.
    :return: list of mapping with changed fields and their details.
    :rtype: list

    .. warning::
       NOT IMPLEMENTED - History is different than before.
    """
    raise NotImplementedError("Not implemented RPC method")  # pragma: no cover