in src/client/retry.rs [439:449]
fn retryable(self, config: &RetryConfig) -> RetryableRequest;
/// Dispatch a request with the given retry configuration
///
/// # Panic
///
/// This will panic if the request body is a stream
fn send_retry(self, config: &RetryConfig) -> BoxFuture<'static, Result<HttpResponse>>;
}
impl RetryExt for HttpRequestBuilder {