code: def get_prices(self) -> List[PriceModel]:
          
          # return self.security.prices.order_by(Price.date)
          from pricedb.dal import Price
  
          pricedb = PriceDbApplication()
          repo = pricedb.get_price_repository()
          query = (repo.query(Price)
              .filter(Price.namespace == self.security.namespace)
              .filter(Price.symbol == self.security.mnemonic)
              .orderby_desc(Price.date)
          )
          return query.all()
docs: Returns all available prices for security