helper for shared prefs - kotlin version - usage after refactoring step 4

MainActivity.kt

class MainActivity : BaseActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        val prefs = PreferenceHelper.defaultPrefs(this)
        
        //put value in prefs
        prefs.setValue(Consts.SharedPrefs.KEY,"any_type_of_value")
        //get value from prefs
        val value:String? = prefs.getValue(Consts.SharedPrefs.KEY)
    }
}