code: @Override
      public UpdateAcceleratorResult updateAccelerator(UpdateAcceleratorRequest request) {
          request = beforeClientExecution(request);
          return executeUpdateAccelerator(request);
      }
docs: <p>
  Update an accelerator.
  </p>
  
  @param updateAcceleratorRequest
  @return Result of the UpdateAccelerator operation returned by the service.
  @throws AcceleratorNotFoundException
  The accelerator that you specified doesn't exist.
  @throws InternalServiceErrorException
  There was an internal error for AWS Global Accelerator.
  @throws InvalidArgumentException
  An argument that you specified is invalid.
  @sample AWSGlobalAccelerator.UpdateAccelerator
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/globalaccelerator-2018-08-08/UpdateAccelerator"
  target="_top">AWS API Documentation</a>