paguro.Dataset[VFM: paguro.models.vfm.vfmodel.VFrameModel]].rolling(index_column: IntoExpr, *, period: str | timedelta, offset: str | timedelta | None = None, closed: ClosedInterval = 'right', group_by: IntoExpr | Iterable[IntoExpr] | None = None) → _GroupBy[Dataset] Polars’ rolling.