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: arena.rs
    path of file: ./repos/rs-poker/benches
    
    the code of the file until where you have to start completion: use criterion::BenchmarkId;
use criterion::Criterion;

use criterion::criterion_group;
use
    
fn run_one_arena(num_players: usize, percent_fold: f64, percent_call: f64) -> GameState {
    let stacks = vec![STARTING_STACK; num_players];
    let game_state = GameState::new(stacks, BIG_BLIND, SMALL_BLIND, ANTE, 0);
    let agents: Vec<Box<dyn Agent>> = (0..num_players)
        .map(|_| -> Box<dyn Agent> {
            Box::new(RandomAgent::new(vec![percent_fold], vec![percent_call]))
        })
        .collect();
    let mut sim = HoldemSimulationBuilder::default()
        .game_state(game_state)
        .agents(agents)
        .build()
        .unwrap();
    sim.run();
    sim.game_state
}