{"ast_node_type":"other","tokens":[{"end":95,"kind":"keyword","start":0,"text":"//"}]}
            //        ^^^                     ^^^^^^^^^^^^^^^^^^^^^^^ the def id we are calling
            // struct Foo<T, const N: usize = { <T as Trait>::ASSOC }>(T) where T: Trait;
            //        ^^^                                             explicit_predicates_of on