Adds elements to the TrailList 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 DescribeTrailsResult WithTrailList( IEnumerable<Trail> trailList )

- trailList (IEnumerable<(Of <(<'Trail>)>)>)
- The values to add to the TrailList collection

this instance