void FlushCaches(TransactionToken* token) override;
  Status SetOption(const std::string& name,
                   const std::vector<string>& values) override;
  Status SetOption(const std::string& name,
                   const std::vector<int64_t>& values) override;
  Status SetOption(const std::string& name,
                   const std::vector<double>& values) override;

 private:

        sysProps["prop4"] = "not anything much"

        expect:
        def value1 = options.getOption(new InternalFlag("prop1", false))
        value1.get()
        value1.explicit

        def value2 = options.getOption(new InternalFlag("prop2", false))
        value2.get()
        value2.explicit

        def value3 = options.getOption(new InternalFlag("prop3", true))
        !value3.get()
        value3.explicit

    public JavadocOptionFileOptionInternal<T> duplicate() {
        // TODO: We basically don't support copying custom Javadoc options
        return this;
    }

    @Override
    public String getOption() {
        return option.getOption();
    }

    @Override
    public T getValue() {
        return option.getValue();
    }

    @Override
    public void setValue(T value) {
        option.setValue(value);
    }

    public DefaultInternalOptions(Map<String, String> startParameterSystemProperties) {
        this.startParameterSystemProperties = startParameterSystemProperties;
    }

    @Override
    public <T> Option.Value<T> getOption(InternalOption<T> option) {
        String value = startParameterSystemProperties.get(option.getSystemPropertyName());
        if (value == null) {
            value = System.getProperty(option.getSystemPropertyName());

 *
 * @param <T> The type which this option represents.
 */
@HasInternalProtocol
public interface JavadocOptionFileOption<T> extends OptionLessJavadocOptionFileOption<T> {
    String getOption();

    }

    def "test addOption"() {
        when:
        optionFile.addOption(optionFileOptionMock)

        then:
        noExceptionThrown()
        1 * optionFileOptionMock.getOption() >> "testOption"
    }

 */
@ServiceScope(Scope.BuildTree.class)
public interface InternalOptions {
    /**
     * Lookup the value for an {@link InternalOption}.
     */
    <T> Option.Value<T> getOption(InternalOption<T> option);

}


private
fun InternalOptions.getInternalFlag(systemPropertyName: String, defaultValue: Boolean = false): Boolean =
    getOption(InternalFlag(systemPropertyName, defaultValue)).get()


private
fun InternalOptions.getInternalString(systemPropertyName: String, defaultValue: String?) =

        if (option == null) {
            throw new IllegalArgumentException("option == null!");
        }

        options.put(option.getOption(), option);

        return option;
    }

    public JavadocOptionFileOption<String> addStringOption(String option) {
        return addStringOption(option, null);
    }

            throw new IllegalArgumentException("option == null!");
        }

        this.option = option;
        this.value = value;
    }

    @Override
    public final String getOption() {
        return option;
    }

    @Override
    public T getValue() {
        return value;
    }

    @Override
    public void setValue(T value) {
        this.value = value;
    }