Create a new CosmosClient and Container using the fluent builder pattern using the Azure Cosmos DB .NET SDK V3 (GA)

CosmosBuilderPattern.cs

using Microsoft.Azure.Cosmos;
using Microsoft.Azure.Cosmos.Fluent; // Use the new fluent namespace
using System.Threading.Tasks;

// Creating a new CosmosClient and Container using the fluent builder pattern
namespace CosmosDotnetSDKGetStarted
{
    class Program
    {
        static async Task Main(string[] args)
        {
            //Create new instance of CosmosClient using builder pattern
            CosmosClient cosmosClient = new CosmosClientBuilder("endpoint", "key")
                .WithApplicationRegion("West US 2")
                .WithApplicationName("ProductReviewsApp")
                .Build();

            //Define and create a new container using builder pattern
            Container container = await cosmosClient.GetDatabase("databaseId").DefineContainer("containerId", "/PartitionKey")
                // Define indexing policy with included and excluded paths
                .WithIndexingPolicy()
                    .WithIncludedPaths()
                        .Path("/username/*")
                        .Path("/productName/*")
                        .Path("/rating/*")
                        .Attach()
                    .WithExcludedPaths()
                        .Path("/*")
                        .Attach()
                    .Attach()
                // Define time to live (TTL) in seconds on container
                .WithDefaultTimeToLive(30)
                .CreateAsync();
        }
    }
}