Function get_by_credit_registration_id 

pub async fn get_by_credit_registration_id(
    conn: &mut PgConnection,
    credit_registration_id: Uuid,
    limit: i64,
) -> ModelResult<Vec<SuotarApiCall>>

Calls that mention a ledger row, for the per-item drill-down.

Containment, not = ANY: only @> can use the GIN index on credit_registration_ids.