internal ListPolicyPrincipalsResponse ListPolicyPrincipals(ListPolicyPrincipalsRequest request) { var marshaller = new ListPolicyPrincipalsRequestMarshaller(); var unmarshaller = ListPolicyPrincipalsResponseUnmarshaller.Instance; return Invoke<ListPolicyPrincipalsRequest,ListPolicyPrincipalsResponse>(request, marshaller, unmarshaller); }