Function retry_with_delay

pub fn retry_with_delay<F, T, E>(
    closure: F,
    retries: usize,
    delay: Duration,
) -> Result<T, E>
where
    F: FnMut() -> Result<T, E>,
    E: Debug,

Calls the closure until it returns a non-error Result. If it has been re-tried retries times, the last result is returned. Waits delay between attempts.