public async Task <bool> ExistsRoleAsync(Guid roleId)
        {
            var exists = await _identityRepository.ExistsRoleAsync(roleId);

            if (!exists)
            {
                throw new UserFriendlyErrorPageException(string.Format(_identityServiceResources.RoleDoesNotExist().Description, roleId), _identityServiceResources.RoleDoesNotExist().Description);
            }

            return(true);
        }