Trait ReadableByteStreamControllerMethods 
Source pub trait ReadableByteStreamControllerMethods<D>{
    // Required methods
    fn GetByobRequest(
        &self,
        _can_gc: CanGc,
    ) -> Result<Option<Root<Dom<<D as DomTypes>::ReadableStreamBYOBRequest>>>, Error>;
    fn GetDesiredSize(&self) -> Option<f64>;
    fn Close(&self, _can_gc: CanGc) -> Result<(), Error>;
    fn Enqueue(
        &self,
        chunk: CustomAutoRooterGuard<'_, TypedArray<ArrayBufferViewU8, *mut JSObject>>,
        _can_gc: CanGc,
    ) -> Result<(), Error>;
    fn Error(
        &self,
        cx: JSContext,
        e: Handle<'_, Value>,
        _can_gc: CanGc,
    ) -> Result<(), Error>;
}