Initial Drupal 11 with DDEV setup

vendor/chi-teck/drupal-code-generator/templates/Service/_access-checker/access-checker.twig

@@ -0,0 +1,59 @@
+{% import '@lib/di.twig' as di %}
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\{{ machine_name }}\Access;
+
+{% apply sort_namespaces %}
+use Drupal\Core\Access\AccessResult;
+use Drupal\Core\Routing\Access\AccessInterface;
+use Symfony\Component\Routing\Route;
+  {% if services %}
+{{ di.use(services) }}
+  {% endif %}
+{% endapply %}
+
+/**
+ * Checks if passed parameter matches the route configuration.
+ *
+ * Usage example:
+ * @code
+ * foo.example:
+ *   path: '/example/{parameter}'
+ *   defaults:
+ *     _title: 'Example'
+ *     _controller: '\Drupal\{{ machine_name }}\Controller\{{ machine_name|camelize }}Controller'
+ *   requirements:
+ *     {{ requirement }}: 'some value'
+ * @endcode
+ */
+final class {{ class }} implements AccessInterface {
+{% if services %}
+
+  /**
+   * Constructs {{ class|article }} object.
+   */
+  public function __construct(
+{{ di.signature(services) }}
+  ) {}
+{% endif %}
+
+  /**
+   * Access callback.
+   *
+   * @DCG
+   * Drupal does some magic when resolving arguments for this callback. Make
+   * sure the parameter name matches the name of the placeholder defined in the
+   * route, and it is of the same type.
+   * The following additional parameters are resolved automatically.
+   *   - \Drupal\Core\Routing\RouteMatchInterface
+   *   - \Drupal\Core\Session\AccountInterface
+   *   - \Symfony\Component\HttpFoundation\Request
+   *   - \Symfony\Component\Routing\Route
+   */
+  public function access(Route $route, mixed $parameter): AccessResult {
+    return AccessResult::allowedIf($parameter === $route->getRequirement('{{ requirement }}'));
+  }
+
+}

vendor/chi-teck/drupal-code-generator/templates/Service/_access-checker/services.twig

@@ -0,0 +1,9 @@
+{% import '@lib/di.twig' as di %}
+services:
+  access_check.{{ machine_name }}.{{ requirement|trim('_') }}:
+    class: Drupal\{{ machine_name }}\Access\{{ class }}
+{% if services %}
+    arguments: [{{ di.arguments(services) }}]
+{% endif %}
+    tags:
+      - { name: access_check, applies_to: {{ requirement }} }

vendor/chi-teck/drupal-code-generator/templates/Service/_breadcrumb-builder/breadcrumb-builder.twig

@@ -0,0 +1,54 @@
+{% import '@lib/di.twig' as di %}
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\{{ machine_name }};
+
+{% apply sort_namespaces %}
+use Drupal\Core\Breadcrumb\Breadcrumb;
+use Drupal\Core\Breadcrumb\BreadcrumbBuilderInterface;
+use Drupal\Core\Link;
+use Drupal\Core\Routing\RouteMatchInterface;
+use Drupal\Core\StringTranslation\StringTranslationTrait;
+  {% if services %}
+{{ di.use(services) }}
+  {% endif %}
+{% endapply %}
+
+/**
+ * @todo Add description for this breadcrumb builder.
+ */
+final class {{ class }} implements BreadcrumbBuilderInterface {
+
+  use StringTranslationTrait;
+{% if services %}
+
+  /**
+   * Constructs {{ class|article }} object.
+   */
+  public function __construct(
+{{ di.signature(services) }}
+  ) {}
+{% endif %}
+
+  /**
+   * {@inheritdoc}
+   */
+  public function applies(RouteMatchInterface $route_match): bool {
+    return $route_match->getRouteName() === 'example';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function build(RouteMatchInterface $route_match): Breadcrumb {
+    $breadcrumb = new Breadcrumb();
+
+    $links[] = Link::createFromRoute($this->t('Home'), '<front>');
+    $links[] = Link::createFromRoute($this->t('Example'), '<none>');
+
+    return $breadcrumb->setLinks($links);
+  }
+
+}

vendor/chi-teck/drupal-code-generator/templates/Service/_breadcrumb-builder/services.twig

@@ -0,0 +1,11 @@
+{% import '@lib/di.twig' as di %}
+services:
+  {{ machine_name }}.breadcrumb:
+    class: Drupal\{{ machine_name }}\{{ class }}
+{% if services %}
+    arguments: [{{ di.arguments(services) }}]
+{% endif %}
+    tags:
+      # In order to override breadcrumbs built with PathBasedBreadcrumbBuilder
+      # set the priority higher than zero.
+      - { name: breadcrumb_builder, priority: 1000 }

vendor/chi-teck/drupal-code-generator/templates/Service/_cache-context/cache-context.twig

@@ -0,0 +1,47 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\{{ machine_name }}\Cache\Context;
+
+use Drupal\Core\Cache\CacheableMetadata;
+use Drupal\Core\Cache\Context\{{ interface }};
+{% if base_class %}
+use Drupal\Core\Cache\Context\{{ base_class }};
+{% endif %}
+
+/**
+ * @todo Add a description for the cache context.
+ *
+ * Cache context ID: '{{ context_id }}'.
+ *
+ * @DCG
+ * Check out the core/lib/Drupal/Core/Cache/Context directory for examples of
+ * cache contexts provided by Drupal core.
+ */
+final class {{ class }} {% if base_class %}extends {{ base_class }} {% endif %}implements {{ interface }} {
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function getLabel(): string {
+    return (string) t('{{ context_label }}');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getContext({% if calculated %}$parameter = NULL{% endif %}): string {
+    // @todo Calculate the cache context here.
+    $context = 'some_string_value';
+    return $context;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getCacheableMetadata({% if calculated %}$parameter = NULL{% endif %}): CacheableMetadata {
+    return new CacheableMetadata();
+  }
+
+}

vendor/chi-teck/drupal-code-generator/templates/Service/_cache-context/services.twig

@@ -0,0 +1,10 @@
+services:
+  cache_context.{{ context_id }}:
+    class: Drupal\{{ machine_name }}\Cache\Context\{{ class }}
+{% if base_class == 'RequestStackCacheContextBase' %}
+    arguments: ['@request_stack']
+{% elseif base_class == 'UserCacheContextBase' %}
+    arguments: ['@current_user']
+{% endif %}
+    tags:
+      - { name: cache.context}

vendor/chi-teck/drupal-code-generator/templates/Service/_custom/custom.twig

@@ -0,0 +1,32 @@
+{% import '@lib/di.twig' as di %}
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\{{ machine_name }};
+
+{% if services %}
+{{ di.use(services) }}
+{% endif %}
+/**
+ * @todo Add class description.
+ */
+final class {{ class }}{{ interface ? ' implements ' ~ interface }} {
+{% if services %}
+
+  /**
+   * Constructs {{ class|article }} object.
+   */
+  public function __construct(
+{{ di.signature(services) }}
+  ) {}
+{% endif %}
+
+  /**
+   * {{ interface ? '{@inheritdoc}' : '@todo Add method description.'}}
+   */
+  public function doSomething(): void {
+    // @todo Place your code here.
+  }
+
+}

vendor/chi-teck/drupal-code-generator/templates/Service/_custom/interface.twig

@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\{{ machine_name }};
+
+/**
+ * @todo Add interface description.
+ */
+interface {{ interface }} {
+
+  /**
+   * @todo Add method description.
+   */
+  public function doSomething(): void;
+
+}

vendor/chi-teck/drupal-code-generator/templates/Service/_custom/services.twig

@@ -0,0 +1,7 @@
+{% import '@lib/di.twig' as di %}
+services:
+  {{ service_name }}:
+    class: Drupal\{{ machine_name }}\{{ class }}
+{% if services %}
+    arguments: [{{ di.arguments(services) }}]
+{% endif %}

vendor/chi-teck/drupal-code-generator/templates/Service/_event-subscriber/event-subscriber.twig

@@ -0,0 +1,62 @@
+{% import '@lib/di.twig' as di %}
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\{{ machine_name }}\EventSubscriber;
+
+{% apply sort_namespaces %}
+  {% if services %}
+{{ di.use(services) }}
+  {% endif %}
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+use Symfony\Component\HttpKernel\Event\RequestEvent;
+use Symfony\Component\HttpKernel\Event\ResponseEvent;
+use Symfony\Component\HttpKernel\KernelEvents;
+{% endapply %}
+
+/**
+ * @todo Add description for this subscriber.
+ */
+final class {{ class }} implements EventSubscriberInterface {
+{% if services %}
+
+  /**
+   * Constructs {{ class|article }} object.
+   */
+  public function __construct(
+{{ di.signature(services) }}
+  ) {}
+{% endif %}
+
+  /**
+   * Kernel request event handler.
+   */
+  public function onKernelRequest(RequestEvent $event): void {
+    // @todo Place your code here.
+{% if SUT_TEST %}
+    $this->messenger->addStatus(__FUNCTION__);
+{% endif %}
+  }
+
+  /**
+   * Kernel response event handler.
+   */
+  public function onKernelResponse(ResponseEvent $event): void {
+    // @todo Place your code here.
+{% if SUT_TEST %}
+    $this->messenger->addStatus(__FUNCTION__);
+{% endif %}
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function getSubscribedEvents(): array {
+    return [
+      KernelEvents::REQUEST => ['onKernelRequest'],
+      KernelEvents::RESPONSE => ['onKernelResponse'],
+    ];
+  }
+
+}

vendor/chi-teck/drupal-code-generator/templates/Service/_event-subscriber/services.twig

@@ -0,0 +1,9 @@
+{% import '@lib/di.twig' as di %}
+services:
+  {{ machine_name }}.event_subscriber:
+    class: Drupal\{{ machine_name }}\EventSubscriber\{{ class }}
+{% if services %}
+    arguments: [{{ di.arguments(services) }}]
+{% endif %}
+    tags:
+      - { name: event_subscriber }

vendor/chi-teck/drupal-code-generator/templates/Service/_logger/logger.twig

@@ -0,0 +1,49 @@
+{% import '@lib/di.twig' as di %}
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\{{ machine_name }}\Logger;
+
+{% apply sort_namespaces %}
+use Drupal\Core\Logger\LogMessageParserInterface;
+use Drupal\Core\Logger\RfcLoggerTrait;
+use Psr\Log\LoggerInterface;
+  {% if services %}
+{{ di.use(services) }}
+  {% endif %}
+{% endapply %}
+
+/**
+ * @todo Add a description for the logger.
+ */
+final class {{ class }} implements LoggerInterface {
+
+  use RfcLoggerTrait;
+{% if services %}
+
+  /**
+   * Constructs {{ class|article }} object.
+   */
+  public function __construct(
+{{ di.signature(services) }}
+  ) {}
+{% endif %}
+
+  /**
+   * {@inheritdoc}
+   */
+  public function log($level, string|\Stringable $message, array $context = []): void {
+    $message = (string) $message;
+    // Convert PSR3-style messages to \Drupal\Component\Render\FormattableMarkup
+    // style, so they can be translated too.
+    $placeholders = $this->parser->parseMessagePlaceholders($message, $context);
+    // @see \Drupal\Core\Logger\LoggerChannel::log() for all available contexts.
+    $rendered_message = strtr($message, $placeholders);
+    // @todo Log the rendered message here.
+{% if SUT_TEST %}
+    \file_put_contents('temporary://logger_test.log', $level . ' -> ' . $rendered_message);
+{% endif %}
+  }
+
+}

vendor/chi-teck/drupal-code-generator/templates/Service/_logger/services.twig

@@ -0,0 +1,9 @@
+{% import '@lib/di.twig' as di %}
+services:
+  logger.{{ service_id }}:
+    class: Drupal\{{ machine_name }}\Logger\{{ class }}
+{% if services %}
+    arguments: [{{ di.arguments(services) }}]
+{% endif %}
+    tags:
+      - { name: logger }

vendor/chi-teck/drupal-code-generator/templates/Service/_middleware/middleware.twig

@@ -0,0 +1,44 @@
+{% import '@lib/di.twig' as di %}
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\{{ machine_name }};
+
+{% apply sort_namespaces %}
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\HttpKernel\HttpKernelInterface;
+  {% if services %}
+{{ di.use(services) }}
+  {% endif %}
+{% endapply %}
+
+/**
+ * @todo Add a description for the middleware.
+ */
+final class {{ class }} implements HttpKernelInterface {
+{% if services %}
+
+  /**
+   * Constructs {{ class|article }} object.
+   */
+  public function __construct(
+{{ di.signature(services) }}
+  ) {}
+{% endif %}
+
+  /**
+   * {@inheritdoc}
+   */
+  public function handle(Request $request, $type = self::MAIN_REQUEST, $catch = TRUE): Response {
+    // @todo Modify the request here.
+    $response = $this->httpKernel->handle($request, $type, $catch);
+    // @todo Modify the response here.
+{% if SUT_TEST %}
+    $response->headers->set('x-middleware-handle-test', NULL);
+{% endif %}
+    return $response;
+  }
+
+}

vendor/chi-teck/drupal-code-generator/templates/Service/_middleware/services.twig

@@ -0,0 +1,9 @@
+{% import '@lib/di.twig' as di %}
+services:
+  {{ machine_name }}.middleware:
+    class: Drupal\{{ machine_name }}\{{ class }}
+{% if service_arguments %}
+    arguments: [{{ di.arguments(service_arguments) }}]
+{% endif %}
+    tags:
+      - { name: http_middleware, priority: 10 }

vendor/chi-teck/drupal-code-generator/templates/Service/_param-converter/param-converter.twig

@@ -0,0 +1,71 @@
+{% import '@lib/di.twig' as di %}
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\{{ machine_name }};
+
+{% apply sort_namespaces %}
+use Drupal\Core\ParamConverter\ParamConverterInterface;
+use Symfony\Component\Routing\Route;
+  {% if services %}
+{{ di.use(services) }}
+  {% endif %}
+{% endapply %}
+
+/**
+ * @todo Add description for the converter.
+ *
+ * @DCG
+ * To use this converter specify parameter type in a relevant route as follows:
+ * @code
+ * {{ machine_name }}.{{ parameter_type }}_parameter_converter:
+ *   path: example/{record}
+ *   defaults:
+ *     _controller: '\Drupal\{{ machine_name }}\Controller\{{ controller_class }}::build'
+ *   requirements:
+ *     _access: 'TRUE'
+ *   options:
+ *     parameters:
+ *       record:
+ *        type: {{ parameter_type }}
+ * @endcode
+ *
+ * Note that parameter converter for entities already exists in Drupal core.
+ * @see \Drupal\Core\ParamConverter\EntityConverter
+ */
+final class {{ class }} implements ParamConverterInterface {
+{% if services %}
+
+  /**
+   * Constructs {{ class|article }} object.
+   */
+  public function __construct(
+{{ di.signature(services) }}
+  ) {}
+{% endif %}
+
+  /**
+   * {@inheritdoc}
+   */
+  public function convert($value, $definition, $name, array $defaults): ?string {
+    // @DCG
+    // If the converter returns something different rather than strings make
+    // sure to define an appropriate return type for this method.
+    return match ($value) {
+      '1' => 'alpha',
+      '2' => 'beta',
+      '3' => 'gamma',
+      // NULL will trigger 404 HTTP error.
+      default => NULL,
+    };
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function applies($definition, $name, Route $route): bool {
+    return isset($definition['type']) && $definition['type'] === 'example';
+  }
+
+}

vendor/chi-teck/drupal-code-generator/templates/Service/_param-converter/services.twig

@@ -0,0 +1,9 @@
+{% import '@lib/di.twig' as di %}
+services:
+  {{ machine_name }}.{{ parameter_type }}_param_converter:
+    class: Drupal\{{ machine_name }}\{{ class }}
+{% if services %}
+    arguments: [{{ di.arguments(services) }}]
+{% endif %}
+    tags:
+      - { name: paramconverter }

vendor/chi-teck/drupal-code-generator/templates/Service/_path-processor/path-processor.twig

@@ -0,0 +1,49 @@
+{% import '@lib/di.twig' as di %}
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\{{ machine_name }}\PathProcessor;
+
+{% apply sort_namespaces %}
+use Drupal\Core\PathProcessor\InboundPathProcessorInterface;
+use Drupal\Core\PathProcessor\OutboundPathProcessorInterface;
+use Drupal\Core\Render\BubbleableMetadata;
+use Symfony\Component\HttpFoundation\Request;
+  {% if services %}
+{{ di.use(services) }}
+  {% endif %}
+{% endapply %}
+
+/**
+ * Path processor to replace 'node' with 'content' in URLs.
+ *
+ * @DCG In case you need to implement only one processor (inbound or outbound)
+ * remove the corresponding interface, method and service tag.
+ */
+final class {{ class }} implements InboundPathProcessorInterface, OutboundPathProcessorInterface {
+{% if services %}
+
+  /**
+   * Constructs {{ class|article }} object.
+   */
+  public function __construct(
+{{ di.signature(services) }}
+  ) {}
+{% endif %}
+
+  /**
+   * {@inheritdoc}
+   */
+  public function processInbound($path, Request $request): string {
+    return preg_replace('#^/content/#i', '/node/', $path);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function processOutbound($path, &$options = [], ?Request $request = NULL, ?BubbleableMetadata $bubbleable_metadata = NULL): string {
+    return preg_replace('#^/node/#i', '/content/', $path);
+  }
+
+}

vendor/chi-teck/drupal-code-generator/templates/Service/_path-processor/services.twig

@@ -0,0 +1,10 @@
+{% import '@lib/di.twig' as di %}
+services:
+  path_processor.{{ machine_name }}:
+    class: Drupal\{{ machine_name }}\PathProcessor\{{ class }}
+{% if services %}
+    arguments: [{{ di.arguments(services) }}]
+{% endif %}
+    tags:
+      - { name: path_processor_inbound }
+      - { name: path_processor_outbound }

vendor/chi-teck/drupal-code-generator/templates/Service/_request-policy/request-policy.twig

@@ -0,0 +1,41 @@
+{% import '@lib/di.twig' as di %}
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\{{ machine_name }}\PageCache;
+
+{% apply sort_namespaces %}
+use Drupal\Core\PageCache\RequestPolicyInterface;
+use Symfony\Component\HttpFoundation\Request;
+  {% if services %}
+{{ di.use(services) }}
+  {% endif %}
+{% endapply %}
+
+/**
+ * @todo Add policy description here.
+ */
+final class {{ class }} implements RequestPolicyInterface {
+{% if services %}
+
+  /**
+   * Constructs {{ class|article }} object.
+   */
+  public function __construct(
+{{ di.signature(services) }}
+  ) {}
+{% endif %}
+
+  /**
+   * {@inheritdoc}
+   */
+  public function check(Request $request): ?string {
+    // @DCG
+    // Return self::ALLOW or self::DENY to indicate whether delivery of a cached
+    // page should be attempted for this request. Return NULL if the policy does
+    // not apply to the given request.
+    return NULL;
+  }
+
+}

vendor/chi-teck/drupal-code-generator/templates/Service/_request-policy/services.twig

@@ -0,0 +1,9 @@
+{% import '@lib/di.twig' as di %}
+services:
+  {{ machine_name }}.page_cache_request_policy.{{ class|c2m }}:
+    class: Drupal\{{ machine_name }}\PageCache\{{ class }}
+{% if services %}
+    arguments: [{{ di.arguments(services) }}]
+{% endif %}
+    tags:
+      - { name: page_cache_request_policy }

vendor/chi-teck/drupal-code-generator/templates/Service/_response-policy/response-policy.twig

@@ -0,0 +1,41 @@
+{% import '@lib/di.twig' as di %}
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\{{ machine_name }}\PageCache;
+
+{% apply sort_namespaces %}
+use Drupal\Core\PageCache\ResponsePolicyInterface;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
+  {% if services %}
+{{ di.use(services) }}
+  {% endif %}
+{% endapply %}
+
+/**
+ * @todo Add policy description here.
+ */
+final class {{ class }} implements ResponsePolicyInterface {
+{% if services %}
+
+  /**
+   * Constructs {{ class|article }} object.
+   */
+  public function __construct(
+{{ di.signature(services) }}
+  ) {}
+{% endif %}
+
+  /**
+   * {@inheritdoc}
+   */
+  public function check(Response $response, Request $request): ?string {
+    // @DCG
+    // Return self::DENY to indicate that the response should not be stored in
+    // the cache. Return NULL if the policy does not apply to the given request.
+    return NULL;
+  }
+
+}

vendor/chi-teck/drupal-code-generator/templates/Service/_response-policy/services.twig

@@ -0,0 +1,11 @@
+{% import '@lib/di.twig' as di %}
+services:
+  {{ machine_name }}.page_cache_response_policy.{{ class|c2m }}:
+    class: Drupal\{{ machine_name }}\PageCache\{{ class }}
+    public: false
+{% if services %}
+    arguments: [{{ di.arguments(services) }}]
+{% endif %}
+    tags:
+      - { name: page_cache_response_policy }
+      - { name: dynamic_page_cache_response_policy }

vendor/chi-teck/drupal-code-generator/templates/Service/_route-subscriber/route-subscriber.twig

@@ -0,0 +1,37 @@
+{% import '@lib/di.twig' as di %}
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\{{ machine_name }}\EventSubscriber;
+
+{% apply sort_namespaces %}
+  {% if services %}
+{{ di.use(services) }}
+  {% endif %}
+use Drupal\Core\Routing\RouteSubscriberBase;
+use Symfony\Component\Routing\RouteCollection;
+{% endapply %}
+
+/**
+ * Route subscriber.
+ */
+final class {{ class }} extends RouteSubscriberBase {
+{% if services %}
+
+  /**
+   * Constructs {{ class|article }} object.
+   */
+  public function __construct(
+{{ di.signature(services) }}
+  ) {}
+{% endif %}
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function alterRoutes(RouteCollection $collection): void {
+    // @see https://www.drupal.org/node/2187643
+  }
+
+}

vendor/chi-teck/drupal-code-generator/templates/Service/_route-subscriber/services.twig

@@ -0,0 +1,9 @@
+{% import '@lib/di.twig' as di %}
+services:
+  {{ machine_name }}.route_subscriber:
+    class: Drupal\{{ machine_name }}\EventSubscriber\{{ class }}
+{% if services %}
+    arguments: [{{ di.arguments(services) }}]
+{% endif %}
+    tags:
+      - { name: event_subscriber }

vendor/chi-teck/drupal-code-generator/templates/Service/_theme-negotiator/services.twig

@@ -0,0 +1,6 @@
+services:
+  theme.negotiator.{{ machine_name }}.example:
+    class: Drupal\{{ machine_name }}\Theme\{{ class }}
+    arguments: ['@request_stack']
+    tags:
+      - { name: theme_negotiator, priority: 1000 }

vendor/chi-teck/drupal-code-generator/templates/Service/_theme-negotiator/theme-negotiator.twig

@@ -0,0 +1,45 @@
+{% import '@lib/di.twig' as di %}
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\{{ machine_name }}\Theme;
+
+{% apply sort_namespaces %}
+use Drupal\Core\Routing\RouteMatchInterface;
+use Drupal\Core\Theme\ThemeNegotiatorInterface;
+  {% if services %}
+{{ di.use(services) }}
+  {% endif %}
+{% endapply %}
+
+/**
+ * Defines a theme negotiator that deals with the active theme on example page.
+ */
+final class {{ class }} implements ThemeNegotiatorInterface {
+{% if services %}
+
+  /**
+   * Constructs the negotiator object.
+   */
+  public function __construct(
+{{ di.signature(services) }}
+  ) {}
+{% endif %}
+
+  /**
+   * {@inheritdoc}
+   */
+  public function applies(RouteMatchInterface $route_match): bool {
+    return $route_match->getRouteName() === '{{ machine_name }}.example';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function determineActiveTheme(RouteMatchInterface $route_match): ?string {
+    // @DCG Here you can determine the active theme for the request.
+    return 'claro';
+  }
+
+}

vendor/chi-teck/drupal-code-generator/templates/Service/_twig-extension/services.twig

@@ -0,0 +1,9 @@
+{% import '@lib/di.twig' as di %}
+services:
+  {{ machine_name }}.twig_extension:
+    class: Drupal\{{ machine_name }}\{{ class }}
+{% if services %}
+    arguments: [{{ di.arguments(services) }}]
+{% endif %}
+    tags:
+      - { name: twig.extension }

vendor/chi-teck/drupal-code-generator/templates/Service/_twig-extension/twig-extension.twig

@@ -0,0 +1,71 @@
+{% import '@lib/di.twig' as di %}
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\{{ machine_name }};
+
+{% apply sort_namespaces %}
+use Twig\Extension\AbstractExtension;
+use Twig\TwigFilter;
+use Twig\TwigFunction;
+use Twig\TwigTest;
+  {% if services %}
+{{ di.use(services) }}
+  {% endif %}
+{% endapply %}
+
+/**
+ * Twig extension.
+ */
+final class {{ class }} extends AbstractExtension {
+{% if services %}
+
+  /**
+   * Constructs the extension object.
+   */
+  public function __construct(
+{{ di.signature(services) }}
+  ) {}
+{% endif %}
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFunctions(): array {
+    $functions[] = new TwigFunction(
+      'example',
+      static function (string $argument): string {
+        return 'Example: ' . $argument;
+      },
+    );
+    return $functions;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFilters(): array {
+    $filters[] = new TwigFilter(
+      'example',
+      static function (string $text): string {
+        return str_replace('example', 'EXAMPLE', $text);
+      },
+    );
+    return $filters;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getTests(): array {
+    $tests[] = new TwigTest(
+      'example',
+      static function (string $text): bool {
+        return $text === 'example';
+      },
+    );
+    return $tests;
+  }
+
+}

vendor/chi-teck/drupal-code-generator/templates/Service/_uninstall-validator/services.twig

@@ -0,0 +1,9 @@
+{% import '@lib/di.twig' as di %}
+services:
+  {{ machine_name }}.uninstall_validator:
+    class: Drupal\{{ machine_name }}\{{ class }}
+{% if services %}
+    arguments: [{{ di.arguments(services) }}]
+{% endif %}
+    tags:
+      - { name: module_install.uninstall_validator }

vendor/chi-teck/drupal-code-generator/templates/Service/_uninstall-validator/uninstall-validator.twig

@@ -0,0 +1,43 @@
+{% import '@lib/di.twig' as di %}
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\{{ machine_name }};
+
+{% apply sort_namespaces %}
+use Drupal\Core\Extension\ModuleUninstallValidatorInterface;
+use Drupal\Core\StringTranslation\StringTranslationTrait;
+  {% if services %}
+{{ di.use(services) }}
+  {% endif %}
+{% endapply %}
+
+/**
+ * @todo Add validator description here.
+ */
+final class {{ class }} implements ModuleUninstallValidatorInterface {
+
+  use StringTranslationTrait;
+{% if services %}
+
+  /**
+   * Constructs the object.
+   */
+  public function __construct(
+{{ di.signature(services) }}
+  ) {}
+{% endif %}
+
+  /**
+   * {@inheritdoc}
+   */
+  public function validate($module): array {
+    $reasons = [];
+    if ($module === '{{ machine_name }}') {
+      $reasons[] = $this->t('Some good reason.');
+    }
+    return $reasons;
+  }
+
+}