System.ServiceModel 4.0.0.0 System.ServiceModel.Security.SecurityTokenSpecification Supporting tokens augment the claims provided by the token associated with the message signature. There are 4 different kinds of supporting tokens, and the enumeration specifies which kind this instance is. Represents a supporting security token and its authorization policies. Constructor 4.0.0.0 To be added. Initializes a new instance of the class. The security token. The collection of security token policies. The security token attachment mode. Property 4.0.0.0 System.ServiceModel.Security.SecurityTokenAttachmentMode To be added. The is an enumeration of the ways in which security tokens can be attached to messages. It includes the following members: Gets the security token attachment mode.