5     future::Future,
16         type Future: Future<Output = Self>;  typedef
17         fn create() -> Self::Future;  in create()
22         type Future = Pin<Box<dyn Future<Output = Self>>>;  typedef
23         fn create() -> Self::Future {  in create()
30         type Future = CustomFut<'a, E, A>;  typedef
31         fn create() -> Self::Future {  in create()
37         ph: PhantomData<(A::Future,)>,
40     impl<'f, E, A: Object<'f, Error = E>> Future for CustomFut<'f, E, A> {
52         type Future: Future<Output = ()>;  typedef
53         fn call(&self) -> Self::Future;  in call()  argument
59         Fut: Future<Output = ()>,
61         type Future = Fut;  typedef
62         fn call(&self) -> Self::Future {  in call()  argument