syntax_data: {"ast_node_type":"variable","tokens":[{"end":57,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:         let underscored_args = match tupled_args.kind() {
context_before:     fn report_calling_closure(&mut self, fun: &Expr<'_>, tupled_args: Ty<'_>, expr: &Expr<'_>) {
context_after:             ty::Tuple(tys) if tys.is_empty() => "".to_owned(),