Initiates the asynchronous execution of the GetItem operation.

C# |
public IAsyncResult BeginGetItem( IDictionary<string, DynamoDBEntry> key, GetItemOperationConfig config, AsyncCallback callback, Object state )

- key (IDictionary<(Of <(<'String, DynamoDBEntry>)>)>)
- Ley of the document.
- config (GetItemOperationConfig)
- Configuration to use.
- callback (AsyncCallback)
- An AsyncCallback delegate that is invoked when the operation completes.
- state (Object)
- A user-defined state object that is passed to the callback procedure. Retrieve this object from within the callback procedure using the AsyncState property.

An IAsyncResult that can be used to poll or wait for results, or both; this value is also needed when invoking EndGetItem
operation.
