diff --git a/src/Builder/ClientBuilder.php b/src/Builder/ClientBuilder.php
index b70bc48..87c543d 100644
--- a/src/Builder/ClientBuilder.php
+++ b/src/Builder/ClientBuilder.php
@@ -1,5 +1,16 @@
 <?php
 
+/*
+ * This source file is available under two different licenses:
+ *   - GNU General Public License version 3 (GPLv3)
+ *   - DACHCOM Commercial License (DCL)
+ * Full copyright and license information is available in
+ * LICENSE.md which is distributed with this source code.
+ *
+ * @copyright  Copyright (c) DACHCOM.DIGITAL AG (https://www.dachcom-digital.com)
+ * @license    GPLv3 and DCL
+ */
+
 namespace DsOpenSearchBundle\Builder;
 
 use DynamicSearchBundle\Logger\LoggerInterface;
@@ -9,7 +20,8 @@ class ClientBuilder implements ClientBuilderInterface
 {
     public function __construct(
         protected LoggerInterface $logger
-    ) {}
+    ) {
+    }
 
     public function build(array $indexOptions): Client
     {
diff --git a/src/Builder/ClientBuilderInterface.php b/src/Builder/ClientBuilderInterface.php
index d7e5c73..4c79964 100644
--- a/src/Builder/ClientBuilderInterface.php
+++ b/src/Builder/ClientBuilderInterface.php
@@ -1,5 +1,16 @@
 <?php
 
+/*
+ * This source file is available under two different licenses:
+ *   - GNU General Public License version 3 (GPLv3)
+ *   - DACHCOM Commercial License (DCL)
+ * Full copyright and license information is available in
+ * LICENSE.md which is distributed with this source code.
+ *
+ * @copyright  Copyright (c) DACHCOM.DIGITAL AG (https://www.dachcom-digital.com)
+ * @license    GPLv3 and DCL
+ */
+
 namespace DsOpenSearchBundle\Builder;
 
 use OpenSearch\Client;
diff --git a/src/Command/RebuildIndexCommand.php b/src/Command/RebuildIndexCommand.php
index d4db9e3..20433cd 100644
--- a/src/Command/RebuildIndexCommand.php
+++ b/src/Command/RebuildIndexCommand.php
@@ -1,5 +1,16 @@
 <?php
 
+/*
+ * This source file is available under two different licenses:
+ *   - GNU General Public License version 3 (GPLv3)
+ *   - DACHCOM Commercial License (DCL)
+ * Full copyright and license information is available in
+ * LICENSE.md which is distributed with this source code.
+ *
+ * @copyright  Copyright (c) DACHCOM.DIGITAL AG (https://www.dachcom-digital.com)
+ * @license    GPLv3 and DCL
+ */
+
 namespace DsOpenSearchBundle\Command;
 
 use DsOpenSearchBundle\Manager\IndexManager;
@@ -34,6 +45,7 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 
         if (empty($contextName)) {
             $output->writeln('<error>no context definition name given</error>');
+
             return Command::FAILURE;
         }
 
@@ -52,6 +64,7 @@ protected function execute(InputInterface $input, OutputInterface $output): int
             $this->indexManager->rebuildIndex($contextName);
         } catch (\Throwable $e) {
             $output->writeln(sprintf('<error>Error rebuilding index mapping: %s</error>', $e->getMessage()));
+
             return Command::FAILURE;
         }
 
diff --git a/src/Controller/Admin/IndexController.php b/src/Controller/Admin/IndexController.php
index f22b4c8..e96b327 100644
--- a/src/Controller/Admin/IndexController.php
+++ b/src/Controller/Admin/IndexController.php
@@ -1,5 +1,16 @@
 <?php
 
+/*
+ * This source file is available under two different licenses:
+ *   - GNU General Public License version 3 (GPLv3)
+ *   - DACHCOM Commercial License (DCL)
+ * Full copyright and license information is available in
+ * LICENSE.md which is distributed with this source code.
+ *
+ * @copyright  Copyright (c) DACHCOM.DIGITAL AG (https://www.dachcom-digital.com)
+ * @license    GPLv3 and DCL
+ */
+
 namespace DsOpenSearchBundle\Controller\Admin;
 
 use DsOpenSearchBundle\Manager\IndexManager;
@@ -11,8 +22,7 @@ class IndexController extends AdminAbstractController
 {
     public function __construct(
         protected IndexManager $indexManager
-    )
-    {
+    ) {
     }
 
     public function rebuildMappingAction(Request $request): Response
@@ -31,5 +41,4 @@ public function rebuildMappingAction(Request $request): Response
 
         return new Response();
     }
-
 }
diff --git a/src/DependencyInjection/Configuration.php b/src/DependencyInjection/Configuration.php
index b608fcc..f97cf8c 100644
--- a/src/DependencyInjection/Configuration.php
+++ b/src/DependencyInjection/Configuration.php
@@ -1,5 +1,16 @@
 <?php
 
+/*
+ * This source file is available under two different licenses:
+ *   - GNU General Public License version 3 (GPLv3)
+ *   - DACHCOM Commercial License (DCL)
+ * Full copyright and license information is available in
+ * LICENSE.md which is distributed with this source code.
+ *
+ * @copyright  Copyright (c) DACHCOM.DIGITAL AG (https://www.dachcom-digital.com)
+ * @license    GPLv3 and DCL
+ */
+
 namespace DsOpenSearchBundle\DependencyInjection;
 
 use Symfony\Component\Config\Definition\Builder\TreeBuilder;
diff --git a/src/DependencyInjection/DsOpenSearchExtension.php b/src/DependencyInjection/DsOpenSearchExtension.php
index e556612..c600746 100644
--- a/src/DependencyInjection/DsOpenSearchExtension.php
+++ b/src/DependencyInjection/DsOpenSearchExtension.php
@@ -1,11 +1,22 @@
 <?php
 
+/*
+ * This source file is available under two different licenses:
+ *   - GNU General Public License version 3 (GPLv3)
+ *   - DACHCOM Commercial License (DCL)
+ * Full copyright and license information is available in
+ * LICENSE.md which is distributed with this source code.
+ *
+ * @copyright  Copyright (c) DACHCOM.DIGITAL AG (https://www.dachcom-digital.com)
+ * @license    GPLv3 and DCL
+ */
+
 namespace DsOpenSearchBundle\DependencyInjection;
 
+use Symfony\Component\Config\FileLocator;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Loader\YamlFileLoader;
 use Symfony\Component\HttpKernel\DependencyInjection\Extension;
-use Symfony\Component\DependencyInjection\ContainerBuilder;
-use Symfony\Component\Config\FileLocator;
 
 class DsOpenSearchExtension extends Extension
 {
diff --git a/src/DsOpenSearchBundle.php b/src/DsOpenSearchBundle.php
index 9d34aff..305af3e 100644
--- a/src/DsOpenSearchBundle.php
+++ b/src/DsOpenSearchBundle.php
@@ -1,10 +1,20 @@
 <?php
 
+/*
+ * This source file is available under two different licenses:
+ *   - GNU General Public License version 3 (GPLv3)
+ *   - DACHCOM Commercial License (DCL)
+ * Full copyright and license information is available in
+ * LICENSE.md which is distributed with this source code.
+ *
+ * @copyright  Copyright (c) DACHCOM.DIGITAL AG (https://www.dachcom-digital.com)
+ * @license    GPLv3 and DCL
+ */
+
 namespace DsOpenSearchBundle;
 
 use DynamicSearchBundle\Provider\Extension\ProviderBundleInterface;
 use Pimcore\Extension\Bundle\AbstractPimcoreBundle;
-use Symfony\Component\HttpKernel\Bundle\Bundle;
 
 final class DsOpenSearchBundle extends AbstractPimcoreBundle implements ProviderBundleInterface
 {
diff --git a/src/DsOpenSearchEvents.php b/src/DsOpenSearchEvents.php
index d0f1f60..1bfc5bd 100644
--- a/src/DsOpenSearchEvents.php
+++ b/src/DsOpenSearchEvents.php
@@ -1,21 +1,32 @@
 <?php
 
+/*
+ * This source file is available under two different licenses:
+ *   - GNU General Public License version 3 (GPLv3)
+ *   - DACHCOM Commercial License (DCL)
+ * Full copyright and license information is available in
+ * LICENSE.md which is distributed with this source code.
+ *
+ * @copyright  Copyright (c) DACHCOM.DIGITAL AG (https://www.dachcom-digital.com)
+ * @license    GPLv3 and DCL
+ */
+
 namespace DsOpenSearchBundle;
 
 final class DsOpenSearchEvents
 {
     /**
-     * The BULK event occurs before during the processing of bulk method
+     * The BULK event occurs before during the processing of bulk method.
      */
     public const BULK = 'ds_opensearch.bulk';
 
     /**
-     * The PRE_COMMIT event occurs before committing queries to ES
+     * The PRE_COMMIT event occurs before committing queries to ES.
      */
     public const PRE_COMMIT = 'ds_opensearch.pre_commit';
 
     /**
-     * The POST_COMMIT event occurs after committing queries to ES
+     * The POST_COMMIT event occurs after committing queries to ES.
      */
     public const POST_COMMIT = 'ds_opensearch.post_commit';
 
diff --git a/src/EventListener/Admin/AssetListener.php b/src/EventListener/Admin/AssetListener.php
index ff7c39e..7f1b9cc 100644
--- a/src/EventListener/Admin/AssetListener.php
+++ b/src/EventListener/Admin/AssetListener.php
@@ -1,5 +1,16 @@
 <?php
 
+/*
+ * This source file is available under two different licenses:
+ *   - GNU General Public License version 3 (GPLv3)
+ *   - DACHCOM Commercial License (DCL)
+ * Full copyright and license information is available in
+ * LICENSE.md which is distributed with this source code.
+ *
+ * @copyright  Copyright (c) DACHCOM.DIGITAL AG (https://www.dachcom-digital.com)
+ * @license    GPLv3 and DCL
+ */
+
 namespace DsOpenSearchBundle\EventListener\Admin;
 
 use Pimcore\Event\BundleManager\PathsEvent;
@@ -21,5 +32,4 @@ public function addJsFiles(PathsEvent $event): void
             '/bundles/dsopensearch/js/backend/settings.js',
         ]);
     }
-
 }
diff --git a/src/Exception/ClientException.php b/src/Exception/ClientException.php
index abe864a..41ad96d 100644
--- a/src/Exception/ClientException.php
+++ b/src/Exception/ClientException.php
@@ -1,5 +1,16 @@
 <?php
 
+/*
+ * This source file is available under two different licenses:
+ *   - GNU General Public License version 3 (GPLv3)
+ *   - DACHCOM Commercial License (DCL)
+ * Full copyright and license information is available in
+ * LICENSE.md which is distributed with this source code.
+ *
+ * @copyright  Copyright (c) DACHCOM.DIGITAL AG (https://www.dachcom-digital.com)
+ * @license    GPLv3 and DCL
+ */
+
 namespace DsOpenSearchBundle\Exception;
 
 final class ClientException extends \Exception
diff --git a/src/Index/Field/AbstractType.php b/src/Index/Field/AbstractType.php
index 07e2d4e..a2f4692 100644
--- a/src/Index/Field/AbstractType.php
+++ b/src/Index/Field/AbstractType.php
@@ -1,5 +1,16 @@
 <?php
 
+/*
+ * This source file is available under two different licenses:
+ *   - GNU General Public License version 3 (GPLv3)
+ *   - DACHCOM Commercial License (DCL)
+ * Full copyright and license information is available in
+ * LICENSE.md which is distributed with this source code.
+ *
+ * @copyright  Copyright (c) DACHCOM.DIGITAL AG (https://www.dachcom-digital.com)
+ * @license    GPLv3 and DCL
+ */
+
 namespace DsOpenSearchBundle\Index\Field;
 
 use DynamicSearchBundle\Index\IndexFieldInterface;
diff --git a/src/Index/Field/DynamicField.php b/src/Index/Field/DynamicField.php
index e43cfd9..d6bfa50 100644
--- a/src/Index/Field/DynamicField.php
+++ b/src/Index/Field/DynamicField.php
@@ -1,5 +1,16 @@
 <?php
 
+/*
+ * This source file is available under two different licenses:
+ *   - GNU General Public License version 3 (GPLv3)
+ *   - DACHCOM Commercial License (DCL)
+ * Full copyright and license information is available in
+ * LICENSE.md which is distributed with this source code.
+ *
+ * @copyright  Copyright (c) DACHCOM.DIGITAL AG (https://www.dachcom-digital.com)
+ * @license    GPLv3 and DCL
+ */
+
 namespace DsOpenSearchBundle\Index\Field;
 
 final class DynamicField extends AbstractType
diff --git a/src/Index/Field/ExplicitField.php b/src/Index/Field/ExplicitField.php
index 6b0321e..073f08f 100644
--- a/src/Index/Field/ExplicitField.php
+++ b/src/Index/Field/ExplicitField.php
@@ -1,5 +1,16 @@
 <?php
 
+/*
+ * This source file is available under two different licenses:
+ *   - GNU General Public License version 3 (GPLv3)
+ *   - DACHCOM Commercial License (DCL)
+ * Full copyright and license information is available in
+ * LICENSE.md which is distributed with this source code.
+ *
+ * @copyright  Copyright (c) DACHCOM.DIGITAL AG (https://www.dachcom-digital.com)
+ * @license    GPLv3 and DCL
+ */
+
 namespace DsOpenSearchBundle\Index\Field;
 
 final class ExplicitField extends AbstractType
diff --git a/src/Manager/IndexManager.php b/src/Manager/IndexManager.php
index 58dab9d..14681d9 100644
--- a/src/Manager/IndexManager.php
+++ b/src/Manager/IndexManager.php
@@ -1,5 +1,16 @@
 <?php
 
+/*
+ * This source file is available under two different licenses:
+ *   - GNU General Public License version 3 (GPLv3)
+ *   - DACHCOM Commercial License (DCL)
+ * Full copyright and license information is available in
+ * LICENSE.md which is distributed with this source code.
+ *
+ * @copyright  Copyright (c) DACHCOM.DIGITAL AG (https://www.dachcom-digital.com)
+ * @license    GPLv3 and DCL
+ */
+
 namespace DsOpenSearchBundle\Manager;
 
 use DsOpenSearchBundle\Builder\ClientBuilderInterface;
@@ -11,13 +22,11 @@
 
 class IndexManager
 {
-
     public function __construct(
         protected ContextDefinitionBuilderInterface $contextDefinitionBuilder,
         protected IndexDocumentGeneratorInterface $indexDocumentGenerator,
         protected ClientBuilderInterface $clientBuilder,
-    )
-    {
+    ) {
     }
 
     public function rebuildIndex(string $contextName): void
@@ -34,7 +43,8 @@ public function rebuildIndex(string $contextName): void
             throw new \Exception(
                 sprintf(
                     '%s. (The current context index provider also requires pre-configured indices. Please make sure your document definition implements the "%s" interface)',
-                    $e->getMessage(), PreConfiguredIndexProviderInterface::class
+                    $e->getMessage(),
+                    PreConfiguredIndexProviderInterface::class
                 )
             );
         }
@@ -59,6 +69,4 @@ public function rebuildIndex(string $contextName): void
 
         $indexService->createIndex($indexDocument);
     }
-
-
 }
diff --git a/src/Normalizer/DocumentRawNormalizer.php b/src/Normalizer/DocumentRawNormalizer.php
index e6d53ed..1bce39e 100644
--- a/src/Normalizer/DocumentRawNormalizer.php
+++ b/src/Normalizer/DocumentRawNormalizer.php
@@ -1,5 +1,16 @@
 <?php
 
+/*
+ * This source file is available under two different licenses:
+ *   - GNU General Public License version 3 (GPLv3)
+ *   - DACHCOM Commercial License (DCL)
+ * Full copyright and license information is available in
+ * LICENSE.md which is distributed with this source code.
+ *
+ * @copyright  Copyright (c) DACHCOM.DIGITAL AG (https://www.dachcom-digital.com)
+ * @license    GPLv3 and DCL
+ */
+
 namespace DsOpenSearchBundle\Normalizer;
 
 use DynamicSearchBundle\Context\ContextDefinitionInterface;
@@ -25,6 +36,7 @@ public function normalize(RawResultInterface $rawResult, ContextDefinitionInterf
     {
         if ($rawResult->hasParameter('fullDatabaseResponse') === false) {
             $message = sprintf('Parameter "fullDatabaseResponse" is required to normalize raw result but is missing');
+
             throw new NormalizerException($message, __CLASS__);
         }
 
diff --git a/src/Normalizer/DocumentSourceNormalizer.php b/src/Normalizer/DocumentSourceNormalizer.php
index 956c23d..b51cec2 100644
--- a/src/Normalizer/DocumentSourceNormalizer.php
+++ b/src/Normalizer/DocumentSourceNormalizer.php
@@ -1,5 +1,16 @@
 <?php
 
+/*
+ * This source file is available under two different licenses:
+ *   - GNU General Public License version 3 (GPLv3)
+ *   - DACHCOM Commercial License (DCL)
+ * Full copyright and license information is available in
+ * LICENSE.md which is distributed with this source code.
+ *
+ * @copyright  Copyright (c) DACHCOM.DIGITAL AG (https://www.dachcom-digital.com)
+ * @license    GPLv3 and DCL
+ */
+
 namespace DsOpenSearchBundle\Normalizer;
 
 use DynamicSearchBundle\Context\ContextDefinitionInterface;
@@ -27,6 +38,7 @@ public function normalize(RawResultInterface $rawResult, ContextDefinitionInterf
 
         if (!is_array($data)) {
             $message = sprintf('Data needs to be type of "array", "%s" given', is_object($data) ? get_class($data) : gettype($data));
+
             throw new NormalizerException($message, __CLASS__);
         }
 
diff --git a/src/OutputChannel/Filter/AggregationFilter.php b/src/OutputChannel/Filter/AggregationFilter.php
index d855daf..02e6b65 100644
--- a/src/OutputChannel/Filter/AggregationFilter.php
+++ b/src/OutputChannel/Filter/AggregationFilter.php
@@ -1,5 +1,16 @@
 <?php
 
+/*
+ * This source file is available under two different licenses:
+ *   - GNU General Public License version 3 (GPLv3)
+ *   - DACHCOM Commercial License (DCL)
+ * Full copyright and license information is available in
+ * LICENSE.md which is distributed with this source code.
+ *
+ * @copyright  Copyright (c) DACHCOM.DIGITAL AG (https://www.dachcom-digital.com)
+ * @license    GPLv3 and DCL
+ */
+
 namespace DsOpenSearchBundle\OutputChannel\Filter;
 
 use DynamicSearchBundle\EventDispatcher\OutputChannelModifierEventDispatcher;
@@ -99,7 +110,7 @@ public function buildViewVars(RawResultInterface $rawResult, $filterValues, $que
         $response = $rawResult->getParameter('fullDatabaseResponse');
 
         $viewVars = [
-            'name' => $this->name,
+            'name'     => $this->name,
             'template' => [sprintf('%s/%s.html.twig', self::VIEW_TEMPLATE_PATH, $this->name), sprintf('%s/aggregation.html.twig', self::VIEW_TEMPLATE_PATH)],
             'label'    => $this->options['label'],
             'multiple' => $this->options['multiple'],
@@ -122,7 +133,6 @@ protected function addQueryFilter(Search $query, array $queryFields): void
         }
 
         foreach ($queryFields as $key => $value) {
-
             if ($key !== $this->name) {
                 continue;
             }
@@ -162,7 +172,6 @@ protected function buildResultArray(array $buckets): array
 
         $values = [];
         foreach ($buckets as $bucket) {
-
             $relationLabel = null;
             if ($this->options['relation_label'] !== null) {
                 $relationLabel = call_user_func($this->options['relation_label'], $bucket['key'], $queryFields['locale'] ?? null);
diff --git a/src/OutputChannel/Filter/CompositeAggregationFilter.php b/src/OutputChannel/Filter/CompositeAggregationFilter.php
index 6fa0982..040c3e5 100644
--- a/src/OutputChannel/Filter/CompositeAggregationFilter.php
+++ b/src/OutputChannel/Filter/CompositeAggregationFilter.php
@@ -1,5 +1,16 @@
 <?php
 
+/*
+ * This source file is available under two different licenses:
+ *   - GNU General Public License version 3 (GPLv3)
+ *   - DACHCOM Commercial License (DCL)
+ * Full copyright and license information is available in
+ * LICENSE.md which is distributed with this source code.
+ *
+ * @copyright  Copyright (c) DACHCOM.DIGITAL AG (https://www.dachcom-digital.com)
+ * @license    GPLv3 and DCL
+ */
+
 namespace DsOpenSearchBundle\OutputChannel\Filter;
 
 use DynamicSearchBundle\Filter\FilterInterface;
@@ -58,7 +69,6 @@ protected function addQueryFilter(Search $query, array $queryFields): void
         }
 
         foreach ($queryFields as $key => $value) {
-
             if ($key !== $this->name) {
                 continue;
             }
@@ -93,7 +103,6 @@ protected function addQueryFilter(Search $query, array $queryFields): void
                 $query->addQuery($boolQuery);
             }
         }
-
     }
 
     protected function buildResultArray(array $buckets): array
@@ -106,7 +115,6 @@ protected function buildResultArray(array $buckets): array
 
         $values = [];
         foreach ($buckets as $bucket) {
-
             $bucketValue = rtrim(implode($this->options['separator'], array_values($bucket['key'])), $this->options['separator']);
 
             $relationLabel = null;
diff --git a/src/OutputChannel/Filter/GeoDistanceFilter.php b/src/OutputChannel/Filter/GeoDistanceFilter.php
index b3f6a44..d6f9d50 100644
--- a/src/OutputChannel/Filter/GeoDistanceFilter.php
+++ b/src/OutputChannel/Filter/GeoDistanceFilter.php
@@ -1,5 +1,16 @@
 <?php
 
+/*
+ * This source file is available under two different licenses:
+ *   - GNU General Public License version 3 (GPLv3)
+ *   - DACHCOM Commercial License (DCL)
+ * Full copyright and license information is available in
+ * LICENSE.md which is distributed with this source code.
+ *
+ * @copyright  Copyright (c) DACHCOM.DIGITAL AG (https://www.dachcom-digital.com)
+ * @license    GPLv3 and DCL
+ */
+
 namespace DsOpenSearchBundle\OutputChannel\Filter;
 
 use DynamicSearchBundle\OutputChannel\Query\Result\RawResultInterface;
@@ -31,10 +42,10 @@ public function buildViewVars(RawResultInterface $rawResult, $filterValues, $que
                 sprintf('%s/%s.html.twig', self::VIEW_TEMPLATE_PATH, $this->name),
                 sprintf('%s/geo_distance.html.twig', self::VIEW_TEMPLATE_PATH)
             ],
-            'form_name' => $this->options['field'],
+            'form_name'          => $this->options['field'],
             'distance_form_name' => sprintf('%s_distance', $this->options['field']),
-            'distance_unit'  => $this->options['distance_unit'],
-            'distance_range' => $this->options['distance_range']
+            'distance_unit'      => $this->options['distance_unit'],
+            'distance_range'     => $this->options['distance_range']
         ];
     }
 
diff --git a/src/OutputChannel/Filter/RangeAggregationFilter.php b/src/OutputChannel/Filter/RangeAggregationFilter.php
index f50722a..7784e02 100644
--- a/src/OutputChannel/Filter/RangeAggregationFilter.php
+++ b/src/OutputChannel/Filter/RangeAggregationFilter.php
@@ -1,5 +1,16 @@
 <?php
 
+/*
+ * This source file is available under two different licenses:
+ *   - GNU General Public License version 3 (GPLv3)
+ *   - DACHCOM Commercial License (DCL)
+ * Full copyright and license information is available in
+ * LICENSE.md which is distributed with this source code.
+ *
+ * @copyright  Copyright (c) DACHCOM.DIGITAL AG (https://www.dachcom-digital.com)
+ * @license    GPLv3 and DCL
+ */
+
 namespace DsOpenSearchBundle\OutputChannel\Filter;
 
 use DynamicSearchBundle\Filter\FilterInterface;
@@ -49,7 +60,7 @@ public function buildViewVars(RawResultInterface $rawResult, $filterValues, $que
         $response = $rawResult->getParameter('fullDatabaseResponse');
 
         $viewVars = [
-            'name' => $this->name,
+            'name'     => $this->name,
             'template' => [sprintf('%s/%s.html.twig', self::VIEW_TEMPLATE_PATH, $this->name), sprintf('%s/aggregation.html.twig', self::VIEW_TEMPLATE_PATH)],
             'label'    => $this->options['label'],
             'multiple' => $this->options['multiple'],
diff --git a/src/OutputChannel/Modifier/Filter/QueryCleanTermFilter.php b/src/OutputChannel/Modifier/Filter/QueryCleanTermFilter.php
index 74524d7..e447309 100644
--- a/src/OutputChannel/Modifier/Filter/QueryCleanTermFilter.php
+++ b/src/OutputChannel/Modifier/Filter/QueryCleanTermFilter.php
@@ -1,5 +1,16 @@
 <?php
 
+/*
+ * This source file is available under two different licenses:
+ *   - GNU General Public License version 3 (GPLv3)
+ *   - DACHCOM Commercial License (DCL)
+ * Full copyright and license information is available in
+ * LICENSE.md which is distributed with this source code.
+ *
+ * @copyright  Copyright (c) DACHCOM.DIGITAL AG (https://www.dachcom-digital.com)
+ * @license    GPLv3 and DCL
+ */
+
 namespace DsOpenSearchBundle\OutputChannel\Modifier\Filter;
 
 use DynamicSearchBundle\OutputChannel\Allocator\OutputChannelAllocatorInterface;
diff --git a/src/OutputChannel/SearchOutputChannel.php b/src/OutputChannel/SearchOutputChannel.php
index e72b116..ad01142 100644
--- a/src/OutputChannel/SearchOutputChannel.php
+++ b/src/OutputChannel/SearchOutputChannel.php
@@ -1,5 +1,16 @@
 <?php
 
+/*
+ * This source file is available under two different licenses:
+ *   - GNU General Public License version 3 (GPLv3)
+ *   - DACHCOM Commercial License (DCL)
+ * Full copyright and license information is available in
+ * LICENSE.md which is distributed with this source code.
+ *
+ * @copyright  Copyright (c) DACHCOM.DIGITAL AG (https://www.dachcom-digital.com)
+ * @license    GPLv3 and DCL
+ */
+
 namespace DsOpenSearchBundle\OutputChannel;
 
 use DsOpenSearchBundle\Builder\ClientBuilderInterface;
diff --git a/src/Provider/OpenSearchIndexProvider.php b/src/Provider/OpenSearchIndexProvider.php
index 7e1b2a7..a6190ae 100644
--- a/src/Provider/OpenSearchIndexProvider.php
+++ b/src/Provider/OpenSearchIndexProvider.php
@@ -1,5 +1,16 @@
 <?php
 
+/*
+ * This source file is available under two different licenses:
+ *   - GNU General Public License version 3 (GPLv3)
+ *   - DACHCOM Commercial License (DCL)
+ * Full copyright and license information is available in
+ * LICENSE.md which is distributed with this source code.
+ *
+ * @copyright  Copyright (c) DACHCOM.DIGITAL AG (https://www.dachcom-digital.com)
+ * @license    GPLv3 and DCL
+ */
+
 namespace DsOpenSearchBundle\Provider;
 
 use DsOpenSearchBundle\Builder\ClientBuilderInterface;
@@ -28,14 +39,12 @@ public static function configureOptions(OptionsResolver $resolver): void
     {
         $defaults = [
             'index'    => function (OptionsResolver $spoolResolver) {
-
                 $spoolResolver->setDefaults([
                     'identifier'            => null,
                     'force_adding_document' => true,
                     'hosts'                 => null,
                     'settings'              => null,
                     'credentials'           => function (OptionsResolver $spoolResolver) {
-
                         $spoolResolver->setDefaults([
                             'username' => null,
                             'password' => null,
@@ -53,7 +62,6 @@ public static function configureOptions(OptionsResolver $resolver): void
                 $spoolResolver->setAllowedTypes('credentials', ['array']);
             },
             'analysis' => function (OptionsResolver $spoolResolver) {
-
                 $spoolResolver->setDefaults([
                     'filter'      => [],
                     'char_filter' => [],
@@ -162,8 +170,10 @@ public function processDocument(ContextDefinitionInterface $contextDefinition, I
 
                     break;
                 default:
-                    throw new \Exception(sprintf('invalid context dispatch type "%s". cannot perform index provider dispatch.',
-                        $contextDefinition->getContextDispatchType()));
+                    throw new \Exception(sprintf(
+                        'invalid context dispatch type "%s". cannot perform index provider dispatch.',
+                        $contextDefinition->getContextDispatchType()
+                    ));
             }
         } catch (\Throwable $e) {
             throw new ProviderException($e->getMessage(), DsOpenSearchBundle::PROVIDER_NAME, $e);
diff --git a/src/Service/IndexPersistenceService.php b/src/Service/IndexPersistenceService.php
index 2d18ea5..51e682f 100644
--- a/src/Service/IndexPersistenceService.php
+++ b/src/Service/IndexPersistenceService.php
@@ -1,5 +1,16 @@
 <?php
 
+/*
+ * This source file is available under two different licenses:
+ *   - GNU General Public License version 3 (GPLv3)
+ *   - DACHCOM Commercial License (DCL)
+ * Full copyright and license information is available in
+ * LICENSE.md which is distributed with this source code.
+ *
+ * @copyright  Copyright (c) DACHCOM.DIGITAL AG (https://www.dachcom-digital.com)
+ * @license    GPLv3 and DCL
+ */
+
 namespace DsOpenSearchBundle\Service;
 
 use DynamicSearchBundle\Document\IndexDocument;
@@ -209,9 +220,11 @@ public function commit(string $commitMode = 'refresh', array $params = []): arra
         switch ($commitMode) {
             case 'flush':
                 $this->client->indices()->flush();
+
                 break;
             case 'refresh':
                 $this->client->indices()->refresh();
+
                 break;
         }
 
@@ -239,7 +252,6 @@ protected function getIndexDocumentFields(IndexDocument $document): array
     {
         $fields = [];
         foreach ($document->getIndexFields() as $field) {
-
             $data = $field->getData();
 
             if (!is_array($data)) {
@@ -261,10 +273,10 @@ protected function parseMappings(IndexDocument $indexDocument): ?array
         $hasDynamicFields = false;
 
         foreach ($indexDocument->getIndexFields() as $indexField) {
-
             // fields should be dynamic, do not create mapping
             if ($indexField->getIndexType() === 'dynamic') {
                 $hasDynamicFields = true;
+
                 continue;
             }
 
diff --git a/src/Service/IndexQueryService.php b/src/Service/IndexQueryService.php
index 8ad2373..70e40f5 100644
--- a/src/Service/IndexQueryService.php
+++ b/src/Service/IndexQueryService.php
@@ -1,5 +1,16 @@
 <?php
 
+/*
+ * This source file is available under two different licenses:
+ *   - GNU General Public License version 3 (GPLv3)
+ *   - DACHCOM Commercial License (DCL)
+ * Full copyright and license information is available in
+ * LICENSE.md which is distributed with this source code.
+ *
+ * @copyright  Copyright (c) DACHCOM.DIGITAL AG (https://www.dachcom-digital.com)
+ * @license    GPLv3 and DCL
+ */
+
 namespace DsOpenSearchBundle\Service;
 
 use OpenSearch\Client;
@@ -51,5 +62,4 @@ protected function getIndexName(): string
     {
         return $this->indexOptions['index']['identifier'];
     }
-
 }