SimpleTheme example

$criteria = new Criteria();
        $criteria->addFilter(new EqualsFilter('technicalName', 'ThemeWithMultiInheritance'));
        $criteria->addAssociation('parentThemes');
        /** @var ThemeEntity $theme */
        $theme = $themeRepository->search($criteria, $context)->first();
    }

    public function testHandleThemeInstallOrUpdateWillRecompileOnlyTouchedTheme(): void
    {
        $salesChannelId = $this->createSalesChannel();
        $themeId = $this->createTheme('SimpleTheme', $salesChannelId);
        $installConfig = $this->configFactory->createFromBundle(new SimpleTheme());
        $installConfig->setStyleFiles(FileCollection::createFromArray(['onlyForFile']));

        $this->themeServiceMock->expects(static::once())
            ->method('compileThemeById')
            ->with(
                $themeId,
                static::isInstanceOf(Context::class),
                static::callback(fn (StorefrontPluginConfigurationCollection $configs): bool => $configs->count() === 2)
            );

        $configs = new StorefrontPluginConfigurationCollection([
            

                new Callback(static function DStorefrontPluginConfiguration $value) use (&$_expectedColor): bool {
                    return $value->getThemeConfig()['fields']['sw-color-brand-primary']['value'] === $_expectedColor; /** @phpstan-ignore-line */
                })
            );

        $kernel = new class($this->getContainer()->get('kernel')) implements KernelInterface {
            private readonly SimpleTheme $simpleTheme;

            public function __construct(private readonly Kernel $kernel)
            {
                $this->simpleTheme = new SimpleTheme();
            }

            public function getBundles(): array
            {
                $bundles = $this->kernel->getBundles();
                $bundles[$this->simpleTheme->getName()] = $this->simpleTheme;

                return $bundles;
            }

            public function getBundle(string $name): BundleInterface
            {