Function timeout_future_ns_with_priority 

pub fn timeout_future_ns_with_priority(
    priority: Priority,
    value: u64,
) -> Pin<Box<dyn Future<Output = ()> + Send + 'static>>

Available on crate feature v2_90 only.

Create a Future that will resolve after the given number of nanoseconds.

The Future must be spawned on an Executor backed by a glib::MainContext.