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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 checkInstances(self) -> None: # TODO: Is this method really needed? """ Check if this node has the minimum required number of protocol instances, i.e. f+1. If not, add a replica. If no election is in progress, this node will try to nominate one of its replicas as primary. This method is called whenever a connection with a new node is established. """

        logger.debug("{} choosing to start election on the basis of count {} and nodes {}".
                     format(self, self.connectedNodeCount, self.nodestack.conns))