public async Task AddClaimsAsync(TUser user, IEnumerable <Claim> claims, CancellationToken cancellationToken)
{
if (user == null)
{
throw new ArgumentNullException("user");
}
if (claims == null)
{
throw new ArgumentNullException("user");
}
await userClaimsTable.Insert(claims, user.Id, cancellationToken);
}
