pub async fn get_latest_state_entries(
conn: &mut PgConnection,
credit_registration_ids: &[Uuid],
states: &[CreditRegistrationState],
) -> ModelResult<HashMap<(Uuid, CreditRegistrationState), DateTime<Utc>>>Expand description
When each of the rows last entered each of states, keyed by (row, state). A pair missing
from the map never entered that state; staying in a state is not entering it.