injectMocks method is missing

[hyungonkim-StroeerNZ]

class MyTest : TestsWithMocks() {
override fun setUpMocks() = mocker.injectMocks(this)

@Mock lateinit var view: View
@Fake lateinit var model: Model

val controller by withMocks { Controller(view = view, firstModel = model) }

@Test fun controllerTest() {
    every { view.render(isAny()) } returns true
    controller.start()
    verify { view.render(model) }
}

}

injectMocks method is not found in the Mock class. Where is it?