override fun onOptionsItemSelected()

in build-android-start/app/src/main/java/com/google/firebase/codelab/friendlychat/MainActivity.kt [87:95]


    override fun onOptionsItemSelected(item: MenuItem): Boolean {
        return when (item.itemId) {
            R.id.sign_out_menu -> {
                signOut()
                true
            }
            else -> super.onOptionsItemSelected(item)
        }
    }