在 Kotlin 函数上使用 Mokito anyObject() 时，指定为非 null 的参数为 null

My code as below, refering to the solution in https://stackoverflow.com/a/30308199/3286489

import org.mockito.Mock
import org.mockito.Mockito
import org.mockito.MockitoAnnotations
import org.mockito.Mockito.*

class SimpleClassTest {

    private fun <T> anyObject(): T {
        Mockito.anyObject<T>()
        return uninitialized()
    }

    private fun <T> uninitialized(): T = null as T
    lateinit var simpleObject: SimpleClass
    @Mock lateinit var injectedObject: InjectedClass


    @Before
    fun setUp() {
        MockitoAnnotations.initMocks(this)
    }

    @Test
    fun testSimpleFunction() {
        simpleObject = SimpleClass(injectedObject)

        verify(injectedObject).settingDependentObject(anyObject())

    }
}

我仍然有下面的错误

java.lang.IllegalArgumentException: Parameter specified as non-null is null: method my.package.InjectedClass.settingDependentObject, parameter dependentObject

我错过什么了吗？

UPDATED

class SimpleClass(val injectedClass: InjectedClass) {

    fun simpleFunction() {
        injectedClass.settingDependentObject(DependentClass(Response.Builder().build()))
    }
}

open class DependentClass(response: Response) {

}

open class InjectedClass() {
    lateinit var dependentObject: DependentClass

    fun settingDependentObject(dependentObject: DependentClass) {
        this.dependentObject = dependentObject
    }
}