Sets the policy ID for this policy and returns the updated policy so that
            multiple calls can be chained together.
            
Policy IDs serve to help developers keep track of multiple policies, and are often used as human readable name for a policy.
 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 Policy WithId( string id )
 Parameters
 Parameters- id (String)
 Return Value
 Return Valuethis instance