/// <summary>
 /// Initiates the asynchronous execution of the Execute operation.
 /// <seealso cref="Amazon.DynamoDBv2.DataModel.MultiTableBatchWrite.Execute"/>
 /// </summary>        
 /// <param name="callback">The callback that will be invoked when the asynchronous operation completes.</param>
 /// <param name="asyncOptions">An instance of AsyncOptions that specifies how the async method should be executed.</param>
 public void ExecuteAsync(AmazonDynamoDBCallback callback, AsyncOptions asyncOptions = null)
 {
     asyncOptions = asyncOptions ?? new AsyncOptions();
     DynamoDBAsyncExecutor.ExecuteAsync(
         () => { ExecuteHelper(true); },
         asyncOptions,
         callback);
 }

 internal static void LoadTableAsync(IAmazonDynamoDB ddbClient, string tableName, Table.DynamoDBConsumer consumer, DynamoDBEntryConversion conversion, AmazonDynamoDBCallback<Table> callback, AsyncOptions asyncOptions = null)
 {
     asyncOptions = asyncOptions??new AsyncOptions();
     DynamoDBAsyncExecutor.ExecuteAsync<Table>(
     ()=>{
         return LoadTable(ddbClient,tableName,consumer,conversion);
     },asyncOptions,callback);
 }

 /// <summary>
 /// Initiates the asynchronous execution of the PutItem operation.
 /// </summary>
 /// <param name="doc">Document to save.</param>        
 /// <param name="callback">The callback that will be invoked when the asynchronous operation completes.</param> 
 /// <param name="asyncOptions">An instance of AsyncOptions that specifies how the async method should be executed.</param>
 public void PutItemAsync(Document doc, AmazonDynamoDBCallback<Document> callback, AsyncOptions asyncOptions = null)
 {
     asyncOptions = asyncOptions ?? new AsyncOptions();
     DynamoDBAsyncExecutor.ExecuteAsync<Document>(
         () => { return PutItemHelper(doc, null, true); },
         asyncOptions,
         callback);
 }

 /// <summary>
 /// Initiates the asynchronous execution of the GetRemaining operation.
 /// <seealso cref="Amazon.DynamoDBv2.DocumentModel.Search.GetRemaining"/>
 /// </summary>        
 /// <param name="callback">The callback that will be invoked when the asynchronous operation completes.</param> 
 /// <param name="asyncOptions">An instance of AsyncOptions that specifies how the async method should be executed.</param>
 public void GetRemainingAsync(AmazonDynamoDBCallback<List<Document>> callback, AsyncOptions asyncOptions = null)
 {
     asyncOptions = asyncOptions ?? new AsyncOptions();
     DynamoDBAsyncExecutor.ExecuteAsync<List<Document>>(
         () => { return GetRemainingHelper(true); },
         asyncOptions,
         callback);
 }

 /// <summary>
 /// Initiates the asynchronous execution of the DownloadTo operation.
 /// </summary>
 /// <param name="downloadPath">Path to save the file.</param>
 /// <param name="callback">The callback that will be invoked when the asynchronous operation completes.</param> 
 /// <param name="asyncOptions">An instance of AsyncOptions that specifies how the async method should be executed.</param>
 public void DownloadToAsync(string downloadPath, AmazonDynamoDBCallback callback, AsyncOptions asyncOptions = null)
 {
     asyncOptions = asyncOptions ?? new AsyncOptions();
     DynamoDBAsyncExecutor.ExecuteAsync(
         () =>
         {
             this.s3ClientCache.GetClient(this.RegionAsEndpoint).DownloadToFilePath(
         this.linker.s3.bucket, this.linker.s3.key, downloadPath, null);
         },
         asyncOptions,
         callback);
 }

 /// <summary>
 /// Initiates the asynchronous execution of the UploadFrom operation.
 /// </summary>
 /// <param name="sourcePath">Path of the file to be uploaded.</param>        
 /// <param name="callback">The callback that will be invoked when the asynchronous operation completes.</param> 
 /// <param name="asyncOptions">An instance of AsyncOptions that specifies how the async method should be executed.</param>
 public void UploadFromAsync(string sourcePath, AmazonDynamoDBCallback callback, AsyncOptions asyncOptions = null)
 {
     asyncOptions = asyncOptions ?? new AsyncOptions();
     DynamoDBAsyncExecutor.ExecuteAsync(
         () =>
         {
             this.s3ClientCache.GetClient(this.RegionAsEndpoint).UploadObjectFromFilePath(
                 this.linker.s3.bucket, this.linker.s3.key, sourcePath, null);
         },
         asyncOptions,
         callback);
 }

 /// <summary>
 /// Initiates the asynchronous execution of the DeleteItem operation.
 /// </summary>
 /// <param name="key">Key of the document.</param>
 /// <param name="config">Configuration to use.</param>        
 /// <param name="callback">The callback that will be invoked when the asynchronous operation completes.</param> 
 /// <param name="asyncOptions">An instance of AsyncOptions that specifies how the async method should be executed.</param>
 public void DeleteItemAsync(IDictionary<string, DynamoDBEntry> key, DeleteItemOperationConfig config,
     AmazonDynamoDBCallback callback, AsyncOptions asyncOptions = null)
 {
     asyncOptions = asyncOptions ?? new AsyncOptions();
     DynamoDBAsyncExecutor.ExecuteAsync(
         () => { DeleteHelper(MakeKey(key), config, true); },
         asyncOptions,
         callback);
 }

 /// <summary>
 /// Initiates the asynchronous execution of the UpdateItem operation.
 /// </summary>
 /// <param name="doc">Attributes to update.</param>
 /// <param name="key">Key of the document.</param>
 /// <param name="config">Configuration to use.</param>        
 /// <param name="callback">The callback that will be invoked when the asynchronous operation completes.</param> 
 /// <param name="asyncOptions">An instance of AsyncOptions that specifies how the async method should be executed.</param>
 public void UpdateItemAsync(Document doc, IDictionary<string, DynamoDBEntry> key, UpdateItemOperationConfig config,
     AmazonDynamoDBCallback<Document> callback, AsyncOptions asyncOptions = null)
 {
     asyncOptions = asyncOptions ?? new AsyncOptions();
     DynamoDBAsyncExecutor.ExecuteAsync<Document>(
         () => { return UpdateHelper(doc, MakeKey(key), config, true); },
         asyncOptions,
         callback);
 }

 /// <summary>
 /// Initiates the asynchronous execution of the GetItem operation.
 /// </summary>
 /// <param name="key">Key of the document.</param>        
 /// <param name="callback">The callback that will be invoked when the asynchronous operation completes.</param> 
 /// <param name="asyncOptions">An instance of AsyncOptions that specifies how the async method should be executed.</param>
 public void GetItemAsync(IDictionary<string, DynamoDBEntry> key,
     AmazonDynamoDBCallback<Document> callback, AsyncOptions asyncOptions = null)
 {
     asyncOptions = asyncOptions ?? new AsyncOptions();
     DynamoDBAsyncExecutor.ExecuteAsync<Document>(
         () => { return GetItemHelper(MakeKey(key), null, true); },
         asyncOptions,
         callback);
 }