{"ast_node_type":"other","tokens":[{"end":29,"kind":"keyword","start":0,"text":"fcx.write_ty(id,"}]}
        fcx.write_ty(id, ty);
        let ty = fcx.check_expr(body.value);
    } else if let Some(hir::FnSig { header, decl, span: fn_sig_span }) = node.fn_sig() {