def METHOD_NAME(self, client: ClientProxy) -> bool:
    """Register Flower ClientProxy instance.
    Parameters
    ----------
    client : flwr.server.client_proxy.ClientProxy
    Returns
    -------
    success : bool
        Indicating if registration was successful. False if ClientProxy is
        already registered or can not be registered for any reason.
    """
    if client.cid in self.nodes:
        return False
    # Generate random integer ID
    random_node_id: int = random.randrange(9223372036854775808)
    client.node_id = random_node_id
    # Register node_id in with State
    state: State = self.state_factory.state()
    state.register_node(node_id=random_node_id)
    # Create and start the instruction scheduler
    ins_scheduler = InsScheduler(
        client_proxy=client,
        state_factory=self.state_factory,
    )
    ins_scheduler.start()
    # Store cid, node_id, and InsScheduler
    self.nodes[client.cid] = (random_node_id, ins_scheduler)
    with self._cv:
        self._cv.notify_all()
    return True