Adds elements to the TrailNameList collection

C# |
[ObsoleteAttribute("The With methods are obsolete and will be removed in version 2 of the AWS SDK for .NET. See http://aws.amazon.com/sdkfornet/#version2 for more information.")] public DescribeTrailsRequest WithTrailNameList( params string[] trailNameList )

- trailNameList (array<String>[]()[][])
- The values to add to the TrailNameList collection

this instance