private static bool HasSessionCreated(SessionResponse obj)
 {
     return(obj.Created != null &&
            obj.Created.Certificates != null &&
            obj.Created.Ds != null &&
            obj.Created.Card != null);
 }
 private static bool HasSessionAccepted(SessionResponse obj)
 {
     return(obj.Accepted != null &&
            obj.Accepted.Card != null);
 }