code: @Override
      public DeleteStateMachineResult deleteStateMachine(DeleteStateMachineRequest request) {
          request = beforeClientExecution(request);
          return executeDeleteStateMachine(request);
      }
docs: <p>
  Deletes a state machine. This is an asynchronous operation: It sets the state machine's status to
  <code>DELETING</code> and begins the deletion process. Each state machine execution is deleted the next time it
  makes a state transition.
  </p>
  <note>
  <p>
  The state machine itself is deleted after all executions are completed or deleted.
  </p>
  </note>
  
  @param deleteStateMachineRequest
  @return Result of the DeleteStateMachine operation returned by the service.
  @throws InvalidArnException
  The provided Amazon Resource Name (ARN) is invalid.
  @sample AWSStepFunctions.DeleteStateMachine
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/DeleteStateMachine" target="_top">AWS API
  Documentation</a>