@SdkInternalApi
    final UnassignIpv6AddressesResult executeUnassignIpv6Addresses(UnassignIpv6AddressesRequest unassignIpv6AddressesRequest) {

        ExecutionContext executionContext = createExecutionContext(unassignIpv6AddressesRequest);
        AWSRequestMetrics awsRequestMetrics = executionContext.getAwsRequestMetrics();
        awsRequestMetrics.startEvent(Field.ClientExecuteTime);
        Request<UnassignIpv6AddressesRequest> request = null;
        Response<UnassignIpv6AddressesResult> response = null;

        try {
            awsRequestMetrics.startEvent(Field.RequestMarshallTime);
            try {
                request = new UnassignIpv6AddressesRequestMarshaller().marshall(super.beforeMarshalling(unassignIpv6AddressesRequest));
                // Binds the request metrics to the current request.
                request.setAWSRequestMetrics(awsRequestMetrics);
                request.addHandlerContext(HandlerContextKey.CLIENT_ENDPOINT, endpoint);
                request.addHandlerContext(HandlerContextKey.ENDPOINT_OVERRIDDEN, isEndpointOverridden());
                request.addHandlerContext(HandlerContextKey.SIGNING_REGION, getSigningRegion());
                request.addHandlerContext(HandlerContextKey.SERVICE_ID, "EC2");
                request.addHandlerContext(HandlerContextKey.OPERATION_NAME, "UnassignIpv6Addresses");
                request.addHandlerContext(HandlerContextKey.ADVANCED_CONFIG, advancedConfig);

            } finally {
                awsRequestMetrics.endEvent(Field.RequestMarshallTime);
            }

            StaxResponseHandler<UnassignIpv6AddressesResult> responseHandler = new StaxResponseHandler<UnassignIpv6AddressesResult>(
                    new UnassignIpv6AddressesResultStaxUnmarshaller());

            response = invoke(request, responseHandler, executionContext);

            return response.getAwsResponse();

        } finally {

            endClientExecution(awsRequestMetrics, request, response);
        }
    }
<p>
Unassigns one or more IPv6 addresses IPv4 Prefix Delegation prefixes from a network interface.
</p>

@param unassignIpv6AddressesRequest
@return Result of the UnassignIpv6Addresses operation returned by the service.
@sample AmazonEC2.UnassignIpv6Addresses
@see <a href="http://docs.aws.amazon.com/goto/WebAPI/ec2-2016-11-15/UnassignIpv6Addresses" target="_top">AWS API
     Documentation</a>
aws-java-sdk-ec2/src/main/java/com/amazonaws/services/ec2/AmazonEC2Client.java