override fun onCreateView(
	inflater: LayoutInflater, container: ViewGroup?,
	savedInstanceState: Bundle?
): View? {
	val fragmentView = inflater.inflate(R.layout.fragment_hoge, container, false)

	val addFragment = fragmentView.findViewById<Button>(R.id.addFragment)
	addFragment.setOnClickListener {
		addFragment()
	}
	return fragmentView
}