.Empty: ClassType
.Empty <: Exception
.Full: ClassType
.Full <: Exception
.Shutdown: ClassType
.Shutdown <: Exception

.Queue!: ClassType
.Queue!.
    __call__: (maxsize := Nat) -> Queue!
    qsize: (self: Ref Queue!) -> Nat
    empty: (self: Ref Queue!) -> Bool
    full: (self: Ref Queue!) -> Bool
    put!: (self: RefMut Queue!, item: Obj, block := Bool, timeout := Float) => NoneType
    put_nowait!: (self: RefMut Queue!, item: Obj) => NoneType
    get!: (self: RefMut Queue!, block := Bool, timeout := Float) => Obj
    get_nowait!: (self: RefMut Queue!) => Obj
    task_done!: (self: RefMut Queue!) => NoneType
    join!: (self: RefMut Queue!) => NoneType
    shutdown!: (self: RefMut Queue!, immediate := Bool) => NoneType

.LifoQueue!: ClassType
.LifoQueue! <: Queue!
.LifoQueue!.
    __call__: (maxsize := Nat) -> LifoQueue!

.PriorityQueue!: ClassType
.PriorityQueue! <: Queue!
.PriorityQueue!.
    __call__: (maxsize := Nat) -> PriorityQueue!

.SimpleQueue!: ClassType
.SimpleQueue!.
    __call__: () -> SimpleQueue!
    qsize: (self: Ref SimpleQueue!) -> Nat
    empty: (self: Ref SimpleQueue!) -> Bool
    put!: (self: RefMut SimpleQueue!, item: Obj, block := Bool, timeout := Float) => NoneType
    put_nowait!: (self: RefMut SimpleQueue!, item: Obj) => NoneType
    get!: (self: RefMut SimpleQueue!, block := Bool, timeout := Float) => Obj
    get_nowait!: (self: RefMut SimpleQueue!) => Obj