我有一个连接几个FlowShapes的Flow，它看起来像这样：

def mainFlow: Flow[MyGraphElement, MyGraphElement, NotUsed] = Flow.fromGraph(GraphDSL.create() { implicit builder =>

    val someClassifier = builder.add(checkSomething) // FlowShape[MyGraphElement,MyGraphElement]
    val filteringRouter = builder.add(partitionBySomething) // UniformFanOutShape[MyGraphElement,MyGraphElement]
    val mlRouter = builder.add(partitionBySomethinfElse()) // UniformFanOutShape[MyGraphElement,MyGraphElement]
    val publishToSnsFlow = builder.add(publishEvidenceToSns()) // FlowShape[MyGraphElement,MyGraphElement]

    val updateTaskStatusDoneFlow1 = builder.add(updateTaskStatus()) // FlowShape[MyGraphElement,MyGraphElement]
    val updateTaskStatusDoneFlow2 = builder.add(updateTaskStatus())
    val updateTaskStatusDoneFlow3 = builder.add(updateTaskStatus())

    someClassifier ~> filteringRouter
    filteringRouter.out("case1") ~> publishToSnsFlow ~> updateTaskStatusDoneFlow1 ~> merge
    filteringRouter.out("case2") ~> someDeciderFlow ~> mlRouter

    mlRouter.out("case5") ~> doSomethingFlow ~> updateTaskStatusDoneFlow2 ~> merge
    mlRouter.out("case4") ~> doSomethingElseFlow ~> updateTaskStatusDoneFlow3 ~> merge

    FlowShape(someClassifier.in, merge.out)
})

我的问题是，我需要用不同的名称调用同一个方法3次，因为FlowShap只能在一个Flow中使用一次......或者我遗漏了一些东西，我能以某种方式做一些改变，使它看起来更优雅吗？我指的是updateTaskStatusDoneFlow 1/2/3
谢谢！