??? fix OMCSessionCmd for OMCSessionZMQ (v400) - solution 2

Author: syntron

OMPython/OMCSession.py

@@ -1273,7 +1273,7 @@ def _omc_port_get(self) -> str:
 
 
 # TODO: OMCSessionCMd => separate file; based on OMCSessionZMQ?
-class OMCSessionZMQ:
+class OMCSessionZMQ(OMSessionABC):
     """
     This class is a compatibility layer for the new schema using OMCSession* classes.
     """