pub trait Handler {
// Required methods
fn completed(&mut self, id: usize, flags: u32, result: Result<usize, Error>);
fn canceled(&mut self, id: usize);
fn tick(&mut self);
fn cleanup(&mut self);
}pub trait Handler {
// Required methods
fn completed(&mut self, id: usize, flags: u32, result: Result<usize, Error>);
fn canceled(&mut self, id: usize);
fn tick(&mut self);
fn cleanup(&mut self);
}