public async Task RemoveMonitoredItems()
{
tokens[0].Dispose();
tokens.RemoveAt(0);
var removeMonitoredItemsRequest = new DeleteMonitoredItemsRequest {
SubscriptionId = subscriptions[0], MonitoredItemIds = monitoredItems.ToArray()
};
var removeMonitoredItemsResponse = await channel.DeleteMonitoredItemsAsync(removeMonitoredItemsRequest);
monitoredItems.RemoveAt(0);
_logger.LogInformation($"Monitored Items Removed.");
}
