pub fn factorize_simplicial_numeric_ldlt_with_row_indices<I: Index, E: ComplexField>(
    L_values: GroupFor<E, &mut [E::Unit]>,
    L_row_indices: &mut [I],
    L_col_ptrs: &[I],
    etree: EliminationTreeRef<'_, I>,
    A: SparseColMatRef<'_, I, E>,
    regularization: LdltRegularization<'_, E>,
    stack: PodStack<'_>
) -> usize