AWS SDK for .NET Documentation
Marker Property
AmazonAmazon.IdentityManagement.ModelListAccessKeysResultMarker Did this page help you?   Yes   No    Tell us about it...
If IsTruncated is true, this element is present and contains the value to use for the Marker parameter in a subsequent pagination request.

Constraints:

Length
1 - 320
Pattern
[\u0020-\u00FF]*

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

Assembly: AWSSDK (Module: AWSSDK) Version: 1.5.20.0 (1.5.20.0)