code: @Override
      public AttachNetworkInterfaceResult attachNetworkInterface(AttachNetworkInterfaceRequest request) {
          request = beforeClientExecution(request);
          return executeAttachNetworkInterface(request);
      }
docs: <p>
  Attaches a network interface to an instance.
  </p>
  
  @param attachNetworkInterfaceRequest
  Contains the parameters for AttachNetworkInterface.
  @return Result of the AttachNetworkInterface operation returned by the service.
  @sample AmazonEC2.AttachNetworkInterface
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/ec2-2016-11-15/AttachNetworkInterface" target="_top">AWS API
  Documentation</a>