{"ast_node_type":"other","tokens":[{"end":100,"kind":"keyword","start":0,"text":"//"}]}
                    // argument generic? `def_id` can't be a closure here, so using `fn_sig` is fine
                    // The move occurred as one of the arguments to a function call. Is that
                    let arg_param = if self.infcx.tcx.def_kind(def_id).is_fn_like()