java – Mockito doReturn：对重载定义的模糊引用

我正在尝试将Scala系统移植到Mockito2.有一些使用doReturn的测试用例,现在在Mockito 2.18.0中我收到此错误：

Error:(34, 5) ambiguous reference to overloaded deFinition,
both method doReturn in object Mockito of type (x$1: Any, x$2: Object*)org.mockito.stubbing.Stubber
and  method doReturn in object Mockito of type (x$1: Any)org.mockito.stubbing.Stubber
match argument types (com.twitter.util.Future[Unit])
doReturn(Future.Unit).when(f.adapterSpy).myFunction(userData, Some(offerId), Always)

在Mockito.java中查看,doReturn实际上是超载的：

public static Stubber doReturn(Object toBeReturned) 
public static Stubber doReturn(Object toBeReturned, Object... toBeReturnednext)

地球上的这种情况并不总是含糊不清的？我如何编译？

谢谢

解决方法:

Scala积压中有一张票.见https://github.com/scala/bug/issues/4775