def _assign_time_positions(self):
    tree = self.tree
    (self.time_position, total_depth) = node_time_depth(tree, max_tree_height=self.max_tree_height)
    self.height = (total_depth - 1)
def _assign_time_positions(self):
    tree = self.tree
    (self.time_position, total_depth) = node_time_depth(tree, max_tree_height=self.max_tree_height)
    self.height = (total_depth - 1)