AuthBridge.SecurityTokenService.MultiProtocolSecurityTokenService.GetOutputClaimsIdentity C# (CSharp) Метод

        protected override ClaimsIdentity GetOutputClaimsIdentity(ClaimsPrincipal principal, RequestSecurityToken request, Scope scope)
        {
            if (null == principal)
            {
                throw new ArgumentNullException("principal");
            }

            var outputIdentity = new ClaimsIdentity();
            IEnumerable<Claim> outputClaims;

            if (this.scopeModel.UseClaimsPolicyEngine)
            {
                IClaimsPolicyEvaluator evaluator = new ClaimsPolicyEvaluator(PolicyStoreFactory.Instance);
                outputClaims = evaluator.Evaluate(new Uri(scope.AppliesToAddress), ((ClaimsIdentity)principal.Identity).Claims);
            }
            else
            {
                outputClaims = ((ClaimsIdentity)principal.Identity).Claims;
            }

            outputIdentity.AddClaims(outputClaims);
            if (outputIdentity.Name == null && outputIdentity.Claims.SingleOrDefault(c => c.Type == ClaimTypes.NameIdentifier) != null)
                outputIdentity.AddClaim(new Claim(ClaimTypes.Name, outputIdentity.Claims.SingleOrDefault(c => c.Type == ClaimTypes.NameIdentifier).Value));

            var isPersistent =
                ((ClaimsIdentity)principal.Identity).Claims.SingleOrDefault(c => c.Type == ClaimTypes.IsPersistent);
            if (isPersistent != null)
            {
                outputIdentity.AddClaim(new Claim(ClaimTypes.IsPersistent, isPersistent.Value));
            }

            return outputIdentity;
        }