public void ListRoles()
        {
            var identity = new CloudIdentity { Username = "******", APIKey = "{apiKey}" };
            var provider = new CloudIdentityProvider(identity);

            #region ListRoles
            IEnumerable<Role> roles = provider.ListRoles();
            foreach (var role in roles)
                Console.WriteLine("{0}: {1}", role.Id, role.Name);
            #endregion
        }