static void Main(string[] args)
{
StockRepository stockRepository = new StockRepository(
Settings.Default.AzureCosmosDBEndpointUrl,
Settings.Default.AzureCosmodBDPrimaryKey,
Settings.Default.AzureCosmosDatabaseName);
Task.WaitAll(stockRepository.EnsureCollection());
Product[] products = GetDemoProducts();
Task.WaitAll(stockRepository.AddEntities(products));
}