def METHOD_NAME(self, row, index=None):
    # Wrap non-dict rows in a dummy object with a predictable key name.
    # This allows for more consistent handling of rows containing scalars
    # or lists.
    if not isinstance(row, dict):
        v = {options.default_colname: row}
        row = visidata.AlwaysDict(row, **v)
    return super().METHOD_NAME(row, index=index)