Change TapTargetView into a TapTargetSequence

In this code example I have a single TapTargetView working:

if (controllerVisible && playerView.isControllerFullyVisible()) {
    if (setPrefs.firstRun) {
        TapTargetView.showFor(PlayerActivity.this,
            TapTarget.forView(buttonSettings, getString(R.string.onboarding_settings_title),
                    getString(R.string.onboarding_settings_description))
                    .outerCircleColor(R.color.blue)
                    .targetCircleColor(R.color.white)
                    .titleTextSize(22)
                    .titleTextColor(R.color.white)
                    .descriptionTextSize(14)
                    .cancelable(true),
            new TapTargetView.Listener() {
                @Override
                public void onTargetClick(TapTargetView view) {
                    super.onTargetClick(view);
                    buttonOpen.performClick();
                }
            });
        setPrefs.markFirstRun();
    }
}

But I cannot work out how to create a TapTargetSequence using the following example:

TapTargetSequence(this)
    .targets(
        TapTarget.forView(buttonSettings, getString(R.string.onboarding_settings_title),
            getString(R.string.onboarding_settings_description))
            .outerCircleColor(R.color.blue)
            .targetCircleColor(R.color.white)
            .titleTextSize(22)
            .titleTextColor(R.color.white)
            .descriptionTextSize(14)
            .cancelable(true),
        TapTarget.forView(buttonMedia, getString(R.string.onboarding_media_title),
            getString(R.string.onboarding_media_description))
            .outerCircleColor(R.color.blue)
            .targetCircleColor(R.color.white)
            .titleTextSize(22)
            .titleTextColor(R.color.white)
            .descriptionTextSize(14)
            .cancelable(true))

I'm having a great deal of trouble with this could someone please help me to figure this out.

Thank you

You forgot to add "start()" method at the end and also TapTargetSequence.Listener. Try the below code, it should work.

    TapTargetSequence(this)
    .targets(
        TapTarget.forView(buttonSettings, getString(R.string.onboarding_settings_title),
            getString(R.string.onboarding_settings_description))
            .outerCircleColor(R.color.blue)
            .targetCircleColor(R.color.white)
            .titleTextSize(22)
            .titleTextColor(R.color.white)
            .descriptionTextSize(14)
            .cancelable(true),
        TapTarget.forView(buttonMedia, getString(R.string.onboarding_media_title),
            getString(R.string.onboarding_media_description))
            .outerCircleColor(R.color.blue)
            .targetCircleColor(R.color.white)
            .titleTextSize(22)
            .titleTextColor(R.color.white)
            .descriptionTextSize(14)
            .cancelable(true)).start()
object : TapTargetSequence.Listener {
            override fun onSequenceFinish() {
                Toast.makeText(this, "Sequence Finished!", Toast.LENGTH_SHORT).show()
            }

            override fun onSequenceStep(lastTarget: TapTarget?, targetClicked: Boolean) {
                Toast.makeText(this, "Great", Toast.LENGTH_SHORT).show()
            }

            override fun onSequenceCanceled(lastTarget: TapTarget?) {
            }
        }