{"ast_node_type":"other","tokens":[{"end":100,"kind":"keyword","start":0,"text":"self.check_rustc_legacy_const_generics(hir_id,"}]}
                            self.check_rustc_legacy_const_generics(hir_id, attr, span, target, item)
                        [sym::rustc_legacy_const_generics, ..] => {
                        }