def navigate(self, name: str, selector: str | int | None) -> CommandGraphNode:
        """Navigate from the current node to the specified child"""
        if name in self.children:
            return _COMMAND_GRAPH_MAP[name](selector, self)
        raise KeyError(f"Given node is not an object: {name}")
Navigate from the current node to the specified child
libqtile/command/graph.py