pub trait MarketDataHandler {
// Required methods
fn on_price_of<'life0, 'async_trait>(
&'life0 self,
symbol_id: u32,
price: SpotPrice
) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>
where Self: 'async_trait,
'life0: 'async_trait;
fn on_market_depth_full_refresh<'life0, 'async_trait>(
&'life0 self,
symbol_id: u32,
full_depth: HashMap<String, DepthPrice>
) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>
where Self: 'async_trait,
'life0: 'async_trait;
fn on_market_depth_incremental_refresh<'life0, 'async_trait>(
&'life0 self,
refresh: Vec<IncrementalRefresh>
) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>
where Self: 'async_trait,
'life0: 'async_trait;
}