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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_owned_destinations(self, server_id):
 """ Return the listener destinations in a WBEM server owned by this subscription manager. This function accesses only the local list of owned destinations; it does not contact the WBEM server. The local list of owned destinations is discovered from the WBEM server when the server is registered with the subscription manager, and is maintained from then on as changes happen through this subscription manager. Parameters: server_id (:term:`string`):
 The server ID of the WBEM server, returned by :meth:`~pywbem.WBEMSubscriptionManager.add_server`. Returns: :class:`py:list` of :class:`~pywbem.CIMInstance`: The listener destination instances. """


        # Validate server_id
        self._get_server(server_id)

        return list(self._owned_destinations[server_id])