docs: def get_all_orders(
              self,
              asset=None,
              before=None,
              status='all',
              days_back=None):
          '''
          If asset is unspecified or None, returns a dictionary keyed by
          asset ID. The dictionary contains a list of orders for each ID,
          oldest first. If an asset is specified, returns a list of open
          orders for that asset, oldest first. Orders submitted after
          before will not be returned. If provided, only orders of type
          status ('closed' or 'open') will be returned.
          '''
          orders = self._backend.all_orders(before, status, days_back)
  
          omap = {}
          sorted_orders = sorted([
              o for o in orders.values()
          ], key=lambda o: o.dt)
          for order in sorted_orders:
              key = order.asset
              if key not in omap:
                  omap[key] = []
              omap[key].append(order.to_api_obj())
  
          if asset is None:
              return omap
  
          return omap.get(asset, [])