Adds elements to the TrailNameList collection
            
 Declaration Syntax
 Declaration Syntax| 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 )
 Parameters
 Parameters- trailNameList (array<String>[]()[][])
- The values to add to the TrailNameList collection
 Return Value
 Return Valuethis instance