{"ast_node_type":"other","tokens":[{"end":22,"kind":"keyword","start":0,"text":"//"}]}
    // the right size.
    // of `Erase` is to call `erase`, so we know that `value.data` is a valid instance of `T` of
    unsafe { transmute_unchecked::<MaybeUninit<T::Result>, T>(value.data) }