Scenario 1: Existing applications using single event source in their application

Applications have used single event source over the earlier versions of MobileFirst as it supported push only through event source-based model.

Client

To migrate this in V8.0.0, convert this model to Unicast notification.

Initialize the MFPPush client instance in your application.
```
MFPPush push = MFPPush.GetInstance();
push.Initialize();
```

Implement the interface MFPPushNotificationListener and define onReceive().

class Pushlistener : MFPPushNotificationListener
{
    public void onReceive(String properties, String payload)
    { 
            Debug.WriteLine("Push Notifications\n properties:" + properties + "\n payload:" + payload);
    }
}

MFPPushMessageResponse Response = await push.RegisterDevice(null);
if (Response.Success == true)
{
    Debug.WriteLine("Push Notifications Registered successfully");
} 
else
{
    Debug.WriteLine("Push Notifications Failed to register");
}

(Optional) Un-register the mobile device from the push notification service.

MFPPushMessageResponse Response = await push.UnregisterDevice();
if (Response.Success == true)
{
    Debug.WriteLine("Push Notifications Failed to unregister");
}
else
{
    Debug.WriteLine("Push Notifications Unregistered successfully");
}

Remove WLClient.Push.IsPushSupported() (if used) and use push.IsPushSupported();.
Remove the following WLClient.Push APIs since there will be no event source to subscribe to and register notification callbacks:
1. registerEventSourceCallback()
2. subscribe()
3. unsubscribe()
4. isSubscribed()
5. WLOnReadyToSubscribeListener and WLNotificationListener implementation

Server

Remove the following WL.Server APIs (if used) in your adapter:

notifyAllDevices()
notifyDevice()
notifyDeviceSubscription()
createEventSource()

Complete the following steps for every application that was using the same event source:

Set up the WNS credentials in the Push Settings page of MobileFirst Operations Console or use WNS Settings REST API.
Add the scope push.mobileclient in Map Scope Elements to security checks section in the Security tab of MobileFirst Operations Console.
You can also use the Push Message (POST) REST API with userId/deviceId, to send message.