public async Task Decrement()
{
LCQuery <LCObject> query = new LCQuery <LCObject>("Account");
LCObject account = await query.Get("5e154a5143c257006fbff63f");
TestContext.WriteLine(account["balance"]);
int balance = (int)account["balance"];
account.Increment("balance", -10);
await account.Save();
TestContext.WriteLine(account["balance"]);
Assert.AreEqual((int)account["balance"], balance - 10);
}