private static IEnumerable <IdentityRole> GetDefaultRoles()
{
var roleNames = IdentityConfig.GetRoleNames();
var roles = roleNames.Select(x => new IdentityRole
{
Id = Guid.NewGuid().ToString("D"),
ConcurrencyStamp = Guid.NewGuid().ToString("D"),
Name = x,
NormalizedName = x.ToUpperInvariant()
});
return(roles);
}