{"ast_node_type":"function","tokens":[{"end":65,"kind":"keyword","start":0,"text":"pub"}]}
    pub fn with_self_ty(&self, self_ty: Ty) -> Binder<TraitRef> {
impl Binder<ExistentialTraitRef> {
        self.map_bound_ref(|trait_ref| trait_ref.with_self_ty(self_ty))