code: @Override
      public ExitStandbyResult exitStandby(ExitStandbyRequest request) {
          request = beforeClientExecution(request);
          return executeExitStandby(request);
      }
docs: <p>
  Moves the specified instances out of the standby state.
  </p>
  <p>
  For more information, see <a
  href="https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-enter-exit-standby.html">Temporarily Removing
  Instances from Your Auto Scaling Group</a> in the <i>Amazon EC2 Auto Scaling User Guide</i>.
  </p>
  
  @param exitStandbyRequest
  @return Result of the ExitStandby operation returned by the service.
  @throws ResourceContentionException
  You already have a pending update to an Amazon EC2 Auto Scaling resource (for example, an Auto Scaling
  group, instance, or load balancer).
  @sample AmazonAutoScaling.ExitStandby
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/autoscaling-2011-01-01/ExitStandby" target="_top">AWS API
  Documentation</a>