sendSimpleNotifToUser static method
To send a simple notification to another user using his/her PushPoleId
Implementation
static Future<void> sendSimpleNotifToUser(
String pushpoleId, String title, String content) async =>
_channel.invokeMethod("PushPole#sendSimpleNotifToUser",
{"pushpoleId": pushpoleId, "title": title, "content": content});