another try on the Mixin

Author: mdeneen

pymodbus/client/base.py

@@ -14,7 +14,7 @@
 from pymodbus.transport import CommParams
 
 
-class ModbusBaseClient(ModbusClientMixin[Awaitable[ModbusPDU, int]]):
+class ModbusBaseClient(ModbusClientMixin[Awaitable[ModbusPDU], Awaitable[int]]):
     """**ModbusBaseClient**.
 
     :mod:`ModbusBaseClient` is normally not referenced outside :mod:`pymodbus`.