{"ast_node_type":"other","tokens":[{"end":42,"kind":"keyword","start":0,"text":"//"}]}
                // Check for `..` pattern.
            self.arena.alloc_from_iter(elements.iter().enumerate().filter_map(|(i, e)| {
                if let ExprKind::Range(None, None, RangeLimits::HalfOpen) = e.kind {