1 pub type GearId = u16;

     2 pub trait GearData {}

     3 

     4 pub trait GearDataProcessor<T: GearData> {

     5     fn add(&mut self, gear_id: GearId, gear_data: T);

     6 }

     7 

     8 pub trait GearDataAggregator<T: GearData> {

     9     fn find_processor(&mut self) -> &mut GearDataProcessor<T>;

    10 }