code: @Override
      public DeleteInternetGatewayResult deleteInternetGateway(DeleteInternetGatewayRequest request) {
          request = beforeClientExecution(request);
          return executeDeleteInternetGateway(request);
      }
docs: <p>
  Deletes the specified internet gateway. You must detach the internet gateway from the VPC before you can delete
  it.
  </p>
  
  @param deleteInternetGatewayRequest
  @return Result of the DeleteInternetGateway operation returned by the service.
  @sample AmazonEC2.DeleteInternetGateway
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/ec2-2016-11-15/DeleteInternetGateway" target="_top">AWS API
  Documentation</a>