{"ast_node_type":"other","tokens":[{"end":86,"kind":"keyword","start":0,"text":"//"}]}
            // Create the lock with synchronization enabled using the `RawMutex` type.
        let (mode, mode_union) = if unlikely(mode::might_be_dyn_thread_safe()) {
            (Mode::Sync, ModeUnion { sync: ManuallyDrop::new(RawMutex::INIT) })