pub trait MapIterAdditionalSpecFns<'a, Key: 'a, Value: 'a> {
// Required method
spec fn view(&self) -> (int, Seq<(Key, Value)>);
}
pub trait MapIterAdditionalSpecFns<'a, Key: 'a, Value: 'a> {
// Required method
spec fn view(&self) -> (int, Seq<(Key, Value)>);
}