EndpointMessageResult  
    class EndpointMessageResult
Provides information about the delivery status and results of sending a message directly to an endpoint.
Types
Properties
Link copied to clipboard
                  The delivery status of the message. Possible values are:
Link copied to clipboard
                  The downstream service status code for delivering the message.
Link copied to clipboard
                  The status message for delivering the message.
Link copied to clipboard
                  For push notifications that are sent through the GCM channel, specifies whether the endpoint's device registration token was updated as part of delivering the message.