{"ast_node_type":"variable","tokens":[{"end":73,"kind":"keyword","start":0,"text":"let"}]}
                let fn_sig = self.tcx.hir_node(hir_id).fn_sig().unwrap();
            | Target::Method(MethodKind::Trait { body: true } | MethodKind::Inherent) => {
                let abi = fn_sig.header.abi;