Getting Count using Query

I need to know how I can return a Count using PocoDynamo like is shown here using PocoDynamo
https://docs.aws.amazon.com/amazondynamodb/latest/APIReference/API_Query.html#DDB-Query-request-Select

PocoDynamo high-level API doesn’t return the underlying Dynamo response DTO, you would need to request it using using AWS’s IAmazonDynamoDB client directly, e.g:

QueryResponse response = client.DynamoDb.Query(request);