@Override
    public void display(UserInterface ui) {
        if (breakpointLinesToSet.isEmpty()) {
            UserInterface.print("Breakpoints can be set on lines: ");
            for (String breakpointLine : breakableLineNumbers) {
                UserInterface.print(breakpointLine + " ");
            }
        } else {
            UserInterface.print("Breakpoints set on lines: ");
            for (String breakpointLine : breakpointLinesToSet) {
                UserInterface.print(breakpointLine + " ");
            }
            ui.signalNeedToDisplayFunction();
        }
        UserInterface.println("\n");
    }