final ThemeConfiguration defaultTheme = new DefaultNatTableThemeConfiguration();
final ThemeConfiguration modernTheme = new ModernNatTableThemeConfiguration();
final ThemeConfiguration darkTheme = new DarkNatTableThemeConfiguration();
final ThemeConfiguration conditionalDefaultTheme = new DefaultNatTableThemeConfiguration();
conditionalDefaultTheme
.addThemeExtension(new ConditionalStylingThemeExtension());
final ThemeConfiguration conditionalModernTheme = new ModernNatTableThemeConfiguration();
conditionalModernTheme
.addThemeExtension(new ConditionalStylingThemeExtension());
final ThemeConfiguration conditionalDarkTheme = new DarkNatTableThemeConfiguration();