AWS SDK for .NET Documentation
ReturnItemCollectionMetrics Property
AmazonAmazon.DynamoDBv2.ModelPutItemRequestReturnItemCollectionMetrics Did this page help you?   Yes   No    Tell us about it...
If set to SIZE, statistics about item collections, if any, that were modified during the operation are returned in the response. If set to NONE (the default), no statistics are returned.

Constraints:

Allowed Values
SIZE, NONE

Declaration Syntax
C#
public string ReturnItemCollectionMetrics { get; set; }

Assembly: AWSSDK (Module: AWSSDK) Version: 1.5.60.0 (1.5.60.0)