Merge "Allow specify theme for catalyst test" into main

        @Suppress("UNCHECKED_CAST")

        val clazz = preferenceScreenCreator.fragmentClass() as Class<PreferenceFragmentCompat>

        val builder = StringBuilder()

        FragmentScenario.launch(clazz).use {

        launchFragmentScenario(clazz).use {

            it.onFragment { fragment ->

                taskFinished.set(true)

                fragment.preferenceScreen.toString(builder)

        return builder.toString()

    }

    protected open fun launchFragmentScenario(fragmentClass: Class<PreferenceFragmentCompat>) =

        FragmentScenario.launch(fragmentClass)

    private fun Preference.toString(builder: StringBuilder, indent: String = "") {

        val clazz = javaClass

        builder.append(indent).append(clazz).append(" {\n")