<h3 id="Language_versions">Language versions</h3>

<p>
The <a href="/doc/go1compat">Go 1 compatibility guarantee</a> ensures that
programs written to the Go 1 specification will continue to compile and run
correctly, unchanged, over the lifetime of that specification.
More generally, as adjustments are made and features added to the language,
the compatibility guarantee ensures that a Go program that works with a

    //                                                                             =======
    public HpSpecification specify() {
        assertSpecifyPurpose();
        if (_specification == null) {
            _specification = new HpSpecification();
        }
        return _specification;
    }

    protected void assertQueryPurpose() {
    }

    protected void assertAggregationPurpose() {

    //                                                                             =======
    public HpSpecification specify() {
        assertSpecifyPurpose();
        if (_specification == null) {
            _specification = new HpSpecification();
        }
        return _specification;
    }

    protected void assertQueryPurpose() {
    }

    protected void assertAggregationPurpose() {

    //                                                                             =======
    public HpSpecification specify() {
        assertSpecifyPurpose();
        if (_specification == null) {
            _specification = new HpSpecification();
        }
        return _specification;
    }

    protected void assertQueryPurpose() {
    }

    protected void assertAggregationPurpose() {

    //                                                                             =======
    public HpSpecification specify() {
        assertSpecifyPurpose();
        if (_specification == null) {
            _specification = new HpSpecification();
        }
        return _specification;
    }

    protected void assertQueryPurpose() {
    }

    protected void assertAggregationPurpose() {

    //                                                                             =======
    public HpSpecification specify() {
        assertSpecifyPurpose();
        if (_specification == null) {
            _specification = new HpSpecification();
        }
        return _specification;
    }

    protected void assertQueryPurpose() {
    }

    protected void assertAggregationPurpose() {

    //                                                                             =======
    public HpSpecification specify() {
        assertSpecifyPurpose();
        if (_specification == null) {
            _specification = new HpSpecification();
        }
        return _specification;
    }

    protected void assertQueryPurpose() {
    }

    protected void assertAggregationPurpose() {

    //                                                                             =======
    public HpSpecification specify() {
        assertSpecifyPurpose();
        if (_specification == null) {
            _specification = new HpSpecification();
        }
        return _specification;
    }

    protected void assertQueryPurpose() {
    }

    protected void assertAggregationPurpose() {

    //                                                                             =======
    public HpSpecification specify() {
        assertSpecifyPurpose();
        if (_specification == null) {
            _specification = new HpSpecification();
        }
        return _specification;
    }

    protected void assertQueryPurpose() {
    }

    protected void assertAggregationPurpose() {

    //                                                                             =======
    public HpSpecification specify() {
        assertSpecifyPurpose();
        if (_specification == null) {
            _specification = new HpSpecification();
        }
        return _specification;
    }

    protected void assertQueryPurpose() {
    }

    protected void assertAggregationPurpose() {