extensionThemeStillInUse example

static::assertEquals(
            'Extension test-extension is managed by Composer and cannot be deleted',
            $exception->getMessage()
        );

        static::assertEquals('FRAMEWORK__STORE_CANNOT_DELETE_COMPOSER_MANAGED', $exception->getErrorCode());
        static::assertEquals(Response::HTTP_BAD_REQUEST, $exception->getStatusCode());
    }

    public function testExtensionThemeStillInUse(): void
    {
        $exception = StoreException::extensionThemeStillInUse('abcdefg');

        static::assertEquals(
            'The extension with id "abcdefg" can not be removed because its theme is still assigned to a sales channel.',
            $exception->getMessage()
        );

        static::assertEquals('FRAMEWORK__EXTENSION_THEME_STILL_IN_USE', $exception->getErrorCode());
        static::assertEquals(Response::HTTP_FORBIDDEN, $exception->getStatusCode());
    }

    /** * @DisabledFeatures(features={"v6.6.0.0"}) */

        $aggregates = $this->salesChannelRepository->aggregate($criteria, $context);

        /** @var TermsResult $directlyAssigned */
        $directlyAssigned = $aggregates->get('assigned_theme');

        /** @var TermsResult $assignedChildren */
        $assignedChildren = $aggregates->get('assigned_children');

        if (!empty($directlyAssigned->getKeys()) || !empty($assignedChildren->getKeys())) {
            throw StoreException::extensionThemeStillInUse($id);
        }
    }

    private function getAppById(string $id, Context $context): AppEntity
    {
        $criteria = new Criteria();
        $criteria->addFilter(new EqualsFilter('id', $id));

        /** @var AppEntity $app */
        $app = $this->appRepository->search($criteria, $context)->first();