{"ast_node_type":"other","tokens":[{"end":35,"kind":"keyword","start":0,"text":"local.next_node_index"}]}
            local.next_node_index =
            // `try_into().unwrap()` will make threads panic when `self.next_node_index` exceeds u32::MAX.
                self.next_node_index.fetch_add(COUNT as u64, Ordering::Relaxed).try_into().unwrap();