*/
    public int stableHash() {
        return 0;
    }

    @Override
    public String toString() {
        return String.format("%s isa=%s gid=%s", super.toString(), isa(), getGlobalID());
    }

    /**
     * Generate a stable GID.
     */
    public final String generateGid(GidGenerator generator) {
        return generator.generateGid(isa(), stableHash());
    }

        settings = v;
    }

    @Override
    public String isa() {
        return "PBXBuildFile";
    }

    @Override
    public int stableHash() {
        return fileRef.stableHash();
    }

    @Override
    public void serializeInto(XcodeprojSerializer s) {
        super.serializeInto(s);

        s.addField("fileRef", fileRef);
        if (settings.isPresent()) {

        this.buildSettings = buildSettings;
    }

    @Override
    public String isa() {
        return "PBXBuildStyle";
    }

    @Override
    public int stableHash() {
        return name.hashCode();
    }

    @Override
    public void serializeInto(XcodeprojSerializer s) {
        super.serializeInto(s);

        s.addField("name", name);

    public String getCompatibilityVersion() {
        return compatibilityVersion;
    }

    @Override
    public String isa() {
        return "PBXProject";
    }

    @Override
    public int stableHash() {
        return name.hashCode();
    }

    @Override
    public void serializeInto(XcodeprojSerializer s) {
        super.serializeInto(s);

        s.addField("mainGroup", mainGroup);

    public void setProductReference(PBXFileReference v) {
        productReference = v;
    }

    @Override
    public String isa() {
        return "PBXTarget";
    }

    @Override
    public int stableHash() {
        return name.hashCode();
    }

    @Override
    public void serializeInto(XcodeprojSerializer s) {
        super.serializeInto(s);

        s.addField("name", name);

    }

    public void setSourceTree(SourceTree v) {
        sourceTree = v;
    }

    @Override
    public String isa() {
        return "PBXReference";
    }

    @Override
    public int stableHash() {
        return name.hashCode();
    }

    @Override
    public void serializeInto(XcodeprojSerializer s) {
        super.serializeInto(s);

        s.addField("name", name);
        if (path != null) {