use dashmap::DashMap;

use itertools::Itertools as _;

        let accounts = DashMap::<_, Vec<_>>::new();
        directives
            .into_par_iter()
            .for_each_with(&accounts, |directives, directive| {
                let index = (&directive).try_into().unwrap();
                directives.entry(index).or_default().push(directive);
            });

        let accounts = directives
            .into_iter()
            .into_group_map_by(|directive| DirectiveIndex::try_from(directive).unwrap());

        directives.par_sort_by_key(Directive::date);

        directives.par_sort_by(|left, right| {
            left.timestamp().zip(right.timestamp()).map_or_else(
                || left.date().cmp(&right.date()),
                |(left, right)| left.cmp(&right),
            )
        });