Method set_node

datafusion/physical-plan/src/render_tree.rs:114–119

(&mut self, x: usize, y: usize, node: Arc<RenderTreeNode>)

    }

    pub fn set_node(&mut self, x: usize, y: usize, node: Arc<RenderTreeNode>) {
        let pos = self.get_position(x, y);
        if let Some(slot) = self.nodes.get_mut(pos) {
            *slot = Some(node);
        }
    }

    pub fn has_node(&self, x: usize, y: usize) -> bool {
        if x >= self.width || y >= self.height {