Azure Functions CosmosClient binding

functions-client.cs

 [FunctionName("DocsByUsingCosmosClient")]
  public static async Task<IActionResult> Run(
      [HttpTrigger(AuthorizationLevel.Anonymous, "get", "post",
          Route = null)]HttpRequest req,
      [CosmosDB(
          databaseName: "ToDoItems",
          containerName: "Items",
          Connection = "CosmosDBConnection")] CosmosClient client,
      ILogger log) {

    // use the client to execute any SDK supported operation
      
}