Gets and sets the property ActiveTrustedSigners. CloudFront automatically adds this
            element to the response only if you've set up the distribution to serve private content
            with signed URLs.    The element lists the key pair IDs that CloudFront is aware of
            for each trusted signer.    The Signer child element lists the AWS account number
            of the trusted signer (or an empty Self element if the signer is you).    The Signer
            element also includes the IDs of any active key pairs associated with the trusted
            signer's AWS account. If no KeyPairId element appears for a Signer, that signer can't
            create working signed URLs.
            
 Declaration Syntax
 Declaration Syntax| C# | 
public ActiveTrustedSigners ActiveTrustedSigners { get; set; }