public class PROBETerminalBuilder {
    private BasicTerminalBuilder childBuilder;

        ...

    private BasicTerminalParams getBasicTerminalParams() {
        return getChildBuilder()
            .withEventSystem(getEventSystem())
            .withScheduler(getScheduler())
            .buildParams();
    }

    public PROBETerminal buildTerminal() {
        PROBEServiceLocator locator = getServiceLocator();
        PROBETerminal terminal =
                new PROBETerminal(getBasicTerminalParams(), locator);
        locator.setDataStorage(getDataStorage());
        locator.setDataProvider(getDataProvider());
        locator.setTimeline(getTimeline());
        return terminal;
    }

}