Function benchmarking::multi_thread_bench_function

pub fn multi_thread_bench_function<F, O>(
    number_of_threads: usize, 
    f: F
) -> Result<MeasureResult, BenchmarkError> where
    F: Fn(&mut Measurer) -> O + Send + Sync + 'static, 

Run a function with a number of threads for 5 seconds and measure its execution time.