def update(self, value: float) -> None:
        """
        Overview:
            Updata the current node information, such as visit_count and value_sum.
        Arguments:
            - value (:obj:`Int`): The value of the node.
        """
        self._visit_count += 1
        self._value_sum += value

        Overview:
            Updata the current node information, such as visit_count and value_sum.
        Arguments:
            - value (:obj:`Int`): The value of the node.
        
reason/guided_search/tree.py