Convert Callback to Kotlin Coroutines

suspend fun getMessage(liveData: LiveData<String>) = suspendCoroutine<String> { continuation ->    liveData.observeForever(object : Observer<String> {        override fun onChanged(message: String?) {            message?.let {                liveData.removeObserver(this)                continuation.resume(message)                continuation.resume(if (message == "ok") "" else "")            }        }    })}

launch {    val echo = getMessage(liveData)}

runBlocking {    val echo = getMessage(liveData)}