Initiates the asynchronous execution of the ListActivityTypes operation.
            
 Declaration Syntax
 Declaration Syntax| C# | 
public IAsyncResult BeginListActivityTypes( ListActivityTypesRequest listActivityTypesRequest, AsyncCallback callback, Object state )
 Parameters
 Parameters- listActivityTypesRequest (ListActivityTypesRequest)
- Container for the necessary parameters to execute the ListActivityTypes operation on AmazonSimpleWorkflow.
- 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.
 Return Value
 Return ValueAn IAsyncResult that can be used to poll or wait for results, or both; this value is also needed when invoking EndListActivityTypes
                    operation.