code: @Override
      public DetachInternetGatewayResult detachInternetGateway(DetachInternetGatewayRequest request) {
          request = beforeClientExecution(request);
          return executeDetachInternetGateway(request);
      }
docs: <p>
  Detaches an internet gateway from a VPC, disabling connectivity between the internet and the VPC. The VPC must
  not contain any running instances with Elastic IP addresses or public IPv4 addresses.
  </p>
  
  @param detachInternetGatewayRequest
  @return Result of the DetachInternetGateway operation returned by the service.
  @sample AmazonEC2.DetachInternetGateway
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/ec2-2016-11-15/DetachInternetGateway" target="_top">AWS API
  Documentation</a>