Function cynic::selection_set::map2

pub fn map2<'a, F, _1, _2, NewDecodesTo, TypeLock>(
    func: F, 
    _1: SelectionSet<'a, _1, TypeLock>, 
    _2: SelectionSet<'a, _2, TypeLock>
) -> SelectionSet<'a, NewDecodesTo, TypeLock> where
    F: Fn(_1, _2) -> NewDecodesTo + 'a + Send + Sync,
    _1: 'a,
    _2: 'a,
    NewDecodesTo: 'a,