{"ast_node_type":"other","tokens":[{"end":49,"kind":"keyword","start":0,"text":"[std::sync::mpsc::Sender<T>"}]}
    [std::sync::mpsc::Sender<T> where T: DynSend]
    [std::sync::Mutex<T> where T: ?Sized+ DynSend]
    [std::sync::Arc<T> where T: ?Sized + DynSync + DynSend]