{"ast_node_type":"other","tokens":[{"end":91,"kind":"keyword","start":0,"text":"try_visit!(tcx.fn_sig(def_id).instantiate_identity().visit_with(self));"}]}
                    try_visit!(tcx.fn_sig(def_id).instantiate_identity().visit_with(self));
                    // FIXME: this should probably use `args` from `FnDef`
                }