Function secondary_cost 

pub fn secondary_cost<S>(
    spell: &SpellDataFlat,
    secondary_resource_type: Option<i32>,
    modifiers: &PowerModifiers,
    active_aura_spell_ids: &HashSet<i32, S>,
) -> f64
where
    S: BuildHasher,

Minimum secondary power cost from the row matching the spec’s secondary resource type.