MeasureWithCustomizedOptions.swift

// 1.
@available(iOS 13.0, *)
func testMeasureSPFCascadeScrollingAsAnXtraUser() {
    let options = XCTMeasureOptions()
    options.invocationOptions = [.manuallyStart, .manuallyStop] //< 2.

    // 3.
    measure(metrics: [SlowFrameMetric()], options: options) {
        app.launch()

        // do some stuff..

        // 4.
        startMeasuring()
        // interact with the app, like scrolling or swiping
        stopMeasuring()

        // do some other stuff..

        app.terminate()
    }
}