ios – RxSwift可观察到Observable

我对Rx Swift并不那么信服,而且很难理解.在审查了不同的材料之后,我仍然无法工作和操纵序列.
总的来说,我有类型转换的问题：

CAnnot convert return expression of type 'Observable<Bool>' to return type 'Observable<Void>' (aka 'Observable<()>')

我有CocoaAction处理,应返回Observable< Void>

func stopProject() -> CocoaAction {
    return CocoaAction { _ in
        let stopProject = stop(project: self.projectId)
        return stopProject.asObservable() //wrong converTing
    }
}

stop函数返回Observable< Bool>

完成视图：

return stop(project: self.projectId).flatMap { _ in
        Observable<Void>.empty()
    }

let voidObservable = boolObservable.map { Void() }