{"ast_node_type":"variable","tokens":[{"end":82,"kind":"keyword","start":0,"text":"let"}]}
        let container_id = self.parent(suitable_region_binding_scope.to_def_id());
    pub fn is_bound_region_in_impl_item(self, suitable_region_binding_scope: LocalDefId) -> bool {
        if self.impl_trait_ref(container_id).is_some() {