{"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"(&ty::Adt(a_def,"}]}
                (&ty::Adt(a_def, a_gen_args), &ty::Adt(b_def, b_gen_args)) => {
            match (a.kind(), b.kind()) {
                    // Only `repr(C)` types can be compared structurally.