SendNotifications.
        [Preview API] Send Notification
        :param :class:`<NotificationsData> <azure.devops.v5_1.gallery.models.NotificationsData>` notification_data: Denoting the data needed to send notification

def send_notifications(self, notification_data):
        """SendNotifications.
        [Preview API] Send Notification
        :param :class:`<NotificationsData> <azure.devops.v5_1.gallery.models.NotificationsData>` notification_data: Denoting the data needed to send notification
        """
        content = self._serialize.body(notification_data, 'NotificationsData')
        self._send(http_method='POST',
                   location_id='eab39817-413c-4602-a49f-07ad00844980',
                   version='5.1-preview.1',
                   content=content)