then fixing the bug will break that code.
New features can also have similar impacts:
enabling the HTTP/2 use by the HTTP client broke programs
connecting to servers with buggy HTTP/2 implementations.
These kinds of changes are unavoidable and
[permitted by the Go 1 compatibility rules](/doc/go1compat).
Even so, Go provides a mechanism called GODEBUG to
reduce the impact such changes have on Go developers
using newer toolchains to compile old code.

    Ordering<Number> unusedK = objects.compound(objects.compound(numbers));

    // You can also arbitrarily assign a more restricted type - not an intended
    // feature, exactly, but unavoidable (I think) and harmless
    Ordering<Integer> unusedL = objects.compound(numbers);

    // This correctly doesn't work:
    // Ordering<Object> unusedM = numbers.compound(objects);

    Ordering<Number> unusedK = objects.compound(objects.compound(numbers));

    // You can also arbitrarily assign a more restricted type - not an intended
    // feature, exactly, but unavoidable (I think) and harmless
    Ordering<Integer> unusedL = objects.compound(numbers);

    // This correctly doesn't work:
    // Ordering<Object> unusedM = numbers.compound(objects);

        final MimeTypeHelper mimeTypeHelper = crawlerContainer.getComponent("mimeTypeHelper");
        if (mimeTypeHelper == null) {
            throw new CrawlerSystemException("MimeTypeHelper is unavailable.");
        }
        return mimeTypeHelper;
    }

    /**
     * Returns the ExtractorFactory instance from the CrawlerContainer.
     * @return The ExtractorFactory instance.
     */

            }
            return blob;
        }

        /**
         * Gets the content length of the GCS object.
         *
         * @return The content length in bytes, or -1 if unavailable
         */
        @Override
        public long getContentLengthLong() {
            try {
                if (!connected) {
                    connect();
                }

            }
            return headObject;
        }

        /**
         * Gets the content length of the S3 object.
         *
         * @return The content length in bytes, or -1 if unavailable
         */
        @Override
        public long getContentLengthLong() {
            try {
                if (!connected) {
                    connect();
                }

            return;
        }

        final JobHelper jobHelper = ComponentUtil.getJobHelper();
        if (!jobHelper.isAvailable(id)) {
            logger.info("Job is unavailable, unregistering: id={}", id);
            jobHelper.unregister(scheduledJob);
            return;
        }

        final JobLog jobLog = new JobLog(scheduledJob);

            }
            return statObject;
        }

        /**
         * Gets the content length of the storage object.
         *
         * @return The content length in bytes, or -1 if unavailable
         */
        @Override
        public long getContentLengthLong() {
            try {
                if (!connected) {
                    connect();
                }

    public static final int WITNESS_RESOURCE_STATE_UNKNOWN = 0x00000000;
    /** Resource is available for use */
    public static final int WITNESS_RESOURCE_STATE_AVAILABLE = 0x00000001;
    /** Resource is unavailable */
    public static final int WITNESS_RESOURCE_STATE_UNAVAILABLE = 0x000000FF;

    /**
     * Creates a new empty witness notification.
     */
    public WitnessNotification() {

            if (creator != null) {
                creator.register(this);
            }
        } catch (final Exception e) {
            if (logger.isDebugEnabled()) {
                logger.debug("CrawlerClientCreator is unavailable.", e);
            }
        }
    }

    /**
     * Adds a client with a regular expression pattern.
     * @param regex The regular expression to match URLs.
     * @param client The CrawlerClient instance.