override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        setContentView(R.layout.l000)
        setSupportActionBar(find(R.id.toolbar))
        supportActionBar?.setDisplayHomeAsUpEnabled(true)

        DrawerBuilder().apply {
            withActivity(this@MainActivity)
            withToolbar(find(R.id.toolbar))
            withActionBarDrawerToggleAnimated(true)
            withSliderBackgroundColor(Color.GREEN)
        }.build()
//...
}