You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: bench.rs
    path of file: ./repos/freya/crates/torin/benches
    
    the code of the file until where you have to start completion: use criterion::{criterion_group, criterion_main, Criterion};
use std::collections::HashMap;
use std::fmt::Display;
use torin::prelude::*;

struct TestingMeasurer;

impl LayoutMeasurer<usize> for TestingMeasurer {
    fn measure(
        &mut self,
        _node_id: usize,
        _node: &Node,
        _parent_size: &Area,
        _available_parent_area: &Area,
    ) -> Option<Size2D> {
        None
    }
}

#[derive(Default)]
struct TestingDOM {
    mapper: HashMap<usize, (Option<usize>, Vec<usize>, u16, Node)>,
}

impl TestingDOM {
    fn add(&mut self, node_id: usize, parent: Option<usize>, children: Vec<usize>, node: Node) {
        let depth = parent.map(|p| self.mapper.get(&p).unwrap().2).unwrap_or(0) + 1;
        self.mapper.insert(node_id, (parent, children, depth, node));
    }

    fn add_with_depth(
        &mut self,
        node_id: usize,
        parent: Option<usize>,
        children: Vec<usize>,
        node: Node,
        depth: u16,
    ) {
        self.mapper.insert(node_id, (parent, children, depth, node));
    }

    fn set_node(&mut self, node_id: usize, node: Node) {
        self.mapper.get_mut(&node_id).unwrap().3 = node;
    }
}

impl DOMAdapter<usize> for TestingDOM {
    fn children_of(&mut self, node_id: &usize) -> Vec<usize> {
        self.mapper
            .get(node_id)
            .map(|c| c.1.clone())
            .unwrap_or_default()
    }

    fn parent_of(&self, node_id: &usize) -> Option<usize> {
        self.mapper.get(node_id).map(|c| c.0).flatten()
    }

    fn height(&self, node_id: &usize) -> Option<u16> {
        self.mapper.get(node_id).map(|c| c.2)
    }

    fn get_node(&self, node_id: &usize) -> Option<Node> {
        self.mapper.get(node_id).map(|c| c.3.clone())
    }

    fn is_node_valid(&mut se
    
fn criterion_benchmark(c: &mut Criterion) {
    let mut g = c.benchmark_group("benchmarks");

    let benchmarks = [
        BenchmarkConfig {
            depth: 2,
            wide: 1000,
            mode: BenchmarkMode::NoCache,
            sample: 500,
        },
        BenchmarkConfig {
            depth: 2,
            wide: 10000,
            mode: BenchmarkMode::NoCache,
            sample: 500,
        },
        BenchmarkConfig {
            depth: 2,
            wide: 100000,
            mode: BenchmarkMode::NoCache,
            sample: 500,
        },
        BenchmarkConfig {
            depth: 12,
            wide: 2,
            mode: BenchmarkMode::NoCache,
            sample: 500,
        },
        BenchmarkConfig {
            depth: 14,
            wide: 2,
            mode: BenchmarkMode::NoCache,
            sample: 50,
        },
        BenchmarkConfig {
            depth: 17,
            wide: 2,
            mode: BenchmarkMode::NoCache,
            sample: 30,
        },
        BenchmarkConfig {
            depth: 5,
            wide: 15,
            mode: BenchmarkMode::NoCache,
            sample: 500,
        },
        BenchmarkConfig {
            depth: 5,
            wide: 15,
            mode: BenchmarkMode::InvalidatedCache,
            sample: 500,
        },
        BenchmarkConfig {
            depth: 7,
            wide: 5,
            mode: BenchmarkMode::NoCache,
            sample: 50,
        },
        BenchmarkConfig {
            depth: 7,
            wide: 5,
            mode: BenchmarkMode::InvalidatedCache,
            sample: 50,
        },
    ];

    for bench in benchmarks {
        let name = bench.name();
        let BenchmarkConfig {
            depth,
            mode,
            wide,
            sample,
        } = bench;

        g.significance_level(0.05).sample_size(sample);

        g.bench_function(name, |b| {
            let root_area = Rect::new(Point2D::new(0.0, 0.0), Size2D::new(1000.0, 1000.0));
            b.iter_batched(
                || {
                    let mut measurer = Some(TestingMeasurer);
                    let mut mocked_dom = TestingDOM::default();

                    mocked_dom.add(
                        0,
                        None,
                        (0..wide - 1).map(|i| (i + 1) + 100).collect(),
                        Node::from_size_and_direction(
                            Size::Percentage(Length::new(100.0)),
                            Size::Percentage(Length::new(100.0)),
                            DirectionMode::Vertical,
                        ),
                    );

                    fn build_branch(
                        mocked_dom: &mut TestingDOM,
                        root: usize,
                        level: usize,

                        depth: usize,
                        wide: usize,

                        mid_node: &mut usize,
                    ) -> Vec<usize> {
                        if level == depth - 1 {
                            return vec![];
                        }

                        let nodes = (0..=wide - 1)
                            .map(|i| i + ((level + 1) * 100) + (root * 10))
                            .into_iter()
                            .collect::<Vec<usize>>();
                        for (i, id) in nodes.iter().enumerate() {
                            if level == depth / 2 && i == nodes.len() / 2 {
                                *mid_node = *id;
                            }

                            let children =
                                build_branch(mocked_dom, *id, level + 1, depth, wide, mid_node);
                            mocked_dom.add_with_depth(
                                *id,
                                Some(root),
                                children,
                                Node::from_size_and_direction(
                                    Size::Pixels(Length::new(100.0)),
                                    Size::Pixels(Length::new(100.0)),
                                    DirectionMode::Vertical,
                                ),
                                level as u16,
                            );
                        }
                        nodes
                    }

                    let mut invalidate_node = 0;
                    build_branch(&mut mocked_dom, 0, 0, depth, wide, &mut invalidate_node);

                    let mut layout = Torin::<usize>::new();

                    if mode == BenchmarkMode::InvalidatedCache {
                        layout.find_best_root(&mut mocked_dom);
                        layout.measure(0, root_area, &mut measurer, &mut mocked_dom);
                        mocked_dom.set_node(
                            invalidate_node,
                            Node::from_size_and_direction(
                                Size::Inner,
                                Size::Pixels(Length::new(10.0)),
                                DirectionMode::Vertical,
                            ),
                        );
                        layout.invalidate(invalidate_node);
                    }

                    (mocked_dom, measurer, layout)
                },
                |(mut mocked_dom, mut measurer, mut layout)| {
                    layout.find_best_root(&mut mocked_dom);
                    layout.measure(0, root_area, &mut measurer, &mut mocked_dom)
                },
                criterion::BatchSize::SmallInput,
            )
        });
    }
}