docs: def pnl(self, account='', modelCode='') -> List[PnL]:
          """
          List of subscribed :class:`.PnL` objects (profit and loss),
          optionally filtered by account and/or modelCode.
  
          The :class:`.PnL` objects are kept live updated.
  
          Args:
              account: If specified, filter for this account name.
              modelCode: If specified, filter for this account model.
          """
          return [v for v in self.wrapper.pnls.values() if
                  (not account or v.account == account) and
                  (not modelCode or v.modelCode == modelCode)]