addMessageHandler

public final Unit addMessageHandler(String identifier, MessageHandler handler)

}

})

@param identifier Handle handler unique Identifier, Used for subsequent Remove
```kotlin
NCEngine.addMessageHandler("MSG_HANDLER_ID", object : MessageHandler {
override fun onMessageReceiptResponse(responses: List<ReadReceiptResponse>) {
responses.forEach { response ->
Channel status handler management
}
}
})

NCEngine.addTagHandler("TAG_HANDLER_ID", object: TagHandler {