pub trait AddressBook<Z: NetworkZone>:
Service<AddressBookRequest<Z>, Response = AddressBookResponse<Z>, Error = BoxError, Future: Send + 'static>
+ Send
+ 'static { }
pub trait AddressBook<Z: NetworkZone>:
Service<AddressBookRequest<Z>, Response = AddressBookResponse<Z>, Error = BoxError, Future: Send + 'static>
+ Send
+ 'static { }