Install the Alternative Products feature

<?php

namespace Pyz\Zed\Event;

use Spryker\Zed\Event\EventDependencyProvider as SprykerEventDependencyProvider;
use Spryker\Zed\ProductAlternativeStorage\Communication\Plugin\Event\Subscriber\ProductAlternativeStorageEventSubscriber;

class EventDependencyProvider extends SprykerEventDependencyProvider
{
 public function getEventSubscriberCollection()
 {
 $eventSubscriberCollection = parent::getEventSubscriberCollection();
 $eventSubscriberCollection->add(new ProductAlternativeStorageEventSubscriber());

 return $eventSubscriberCollection;
 }
}

<?php

namespace Pyz\Zed\Publisher;

use Spryker\Zed\ProductAlternativeStorage\Communication\Plugin\Publisher\ProductAlternativePublisherTriggerPlugin;
use Spryker\Zed\Publisher\PublisherDependencyProvider as SprykerPublisherDependencyProvider;

class PublisherDependencyProvider extends SprykerPublisherDependencyProvider
{
    /**
     * @return array<\Spryker\Zed\PublisherExtension\Dependency\Plugin\PublisherTriggerPluginInterface>
     */
    protected function getPublisherTriggerPlugins(): array
    {
        return [
            new ProductAlternativePublisherTriggerPlugin(),
        ];
    }
}

<?php

namespace Pyz\Zed\ProductAlternativeStorage;

use Pyz\Zed\Synchronization\SynchronizationConfig;
use Spryker\Zed\ProductAlternativeStorage\ProductAlternativeStorageConfig as SprykerProductAlternativeStorageConfig;

class ProductAlternativeStorageConfig extends SprykerProductAlternativeStorageConfig
{
 /**
 * @ return string|null
 */
 public function getProductAlternativeSynchronizationPoolName(): ?string
 {
 return SynchronizationConfig::DEFAULT_SYNCHRONIZATION_POOL_NAME;
 }

 /**
 * @return string|null
 */
 public function getProductReplacementForSynchronizationPoolName(): ?string
 {
 return SynchronizationConfig::DEFAULT_SYNCHRONIZATION_POOL_NAME;
 }
}

<?php

namespace Pyz\Zed\Synchronization;

use Spryker\Zed\ProductAlternativeStorage\Communication\Plugin\Synchronization\ProductAlternativeSynchronizationDataPlugin;
use Spryker\Zed\ProductAlternativeStorage\Communication\Plugin\Synchronization\ProductReplacementForSynchronizationDataPlugin;
use Spryker\Zed\Synchronization\SynchronizationDependencyProvider as SprykerSynchronizationDependencyProvider;

class SynchronizationDependencyProvider extends SprykerSynchronizationDependencyProvider
{
 /**
 * @return \Spryker\Zed\SynchronizationExtension\Dependency\Plugin\SynchronizationDataPluginInterface[]
 */
 protected function getSynchronizationDataPlugins(): array
 {
 return [
 new ProductAlternativeSynchronizationDataPlugin(),
 new ProductReplacementForSynchronizationDataPlugin(),
 ];
 }
}

<?php

namespace Pyz\Zed\DataImport;

use Spryker\Zed\DataImport\DataImportDependencyProvider as SprykerDataImportDependencyProvider;
use Spryker\Zed\ProductAlternativeDataImport\Communication\Plugin\ProductAlternativeDataImportPlugin;

class DataImportDependencyProvider extends SprykerDataImportDependencyProvider
{
 protected function getDataImporterPlugins(): array
 {
 return [
 new ProductAlternativeDataImportPlugin(),
 ];
 }
}

<?php

namespace Pyz\Zed\Product;

use Spryker\Zed\Product\ProductDependencyProvider as SprykerProductDependencyProvider;
use Spryker\Zed\ProductAlternativeGui\Communication\Plugin\Product\ProductConcretePluginUpdate as ProductAlternativeGuiProductConcretePluginUpdate;

class ProductDependencyProvider extends SprykerProductDependencyProvider
{
 /**
 * @param \Spryker\Zed\Kernel\Container $container
 *
 * @return \Spryker\Zed\Product\Dependency\Plugin\ProductConcretePluginUpdateInterface[]
 */
 protected function getProductConcreteBeforeUpdatePlugins(Container $container)
 {
 return [
 new ProductAlternativeGuiProductConcretePluginUpdate(), #ProductAlternativeFeature
 ];
 }
}

<?php

namespace Pyz\Yves\ShopApplication;

use SprykerShop\Yves\ProductWidget\Widget\ProductAlternativeWidget;
use SprykerShop\Yves\ProductWidget\Widget\PdpProductReplacementForListWidget;
use SprykerShop\Yves\ProductReplacementForWidget\Widget\ProductReplacementForListWidget;
use SprykerShop\Yves\ProductAlternativeWidget\Widget\ProductAlternativeListWidget;
use SprykerShop\Yves\ShopApplication\ShopApplicationDependencyProvider as SprykerShopApplicationDependencyProvider;

class ShopApplicationDependencyProvider extends SprykerShopApplicationDependencyProvider
{
 /**
 * @return string[]
 */
 protected function getGlobalWidgets(): array
 {
 return [
 ProductAlternativeWidget::class,
 PdpProductReplacementForListWidget::class,
 ProductReplacementForListWidget::class,
 ProductAlternativeListWidget::class,
 ];
 }
}