fixed deprecations

Author: MB_GMBH\borisf

DependencyInjection/Configuration.php

@@ -15,7 +15,7 @@ class Configuration implements ConfigurationInterface
     /**
      * {@inheritDoc}
      */
-    public function getConfigTreeBuilder()
+    public function getConfigTreeBuilder(): TreeBuilder
     {
         $treeBuilder = new TreeBuilder('tetranz_select2_entity');
         $rootNode = $treeBuilder->getRootNode();

DependencyInjection/TetranzSelect2EntityExtension.php

@@ -17,7 +17,7 @@ class TetranzSelect2EntityExtension extends Extension
     /**
      * {@inheritDoc}
      */
-    public function load(array $configs, ContainerBuilder $container)
+    public function load(array $configs, ContainerBuilder $container): void
     {
         $configuration = new Configuration();
         $config = $this->processConfiguration($configuration, $configs);

Form/Type/Select2EntityType.php

@@ -45,7 +45,7 @@ public function __construct(ManagerRegistry $registry, RouterInterface $router,
         $this->config = $config;
     }
 
-    public function buildForm(FormBuilderInterface $builder, array $options)
+    public function buildForm(FormBuilderInterface $builder, array $options): void
     {
         // custom object manager for this entity, override the default entity manager ?
         if (isset($options['object_manager'])) {
@@ -97,7 +97,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
         $builder->addViewTransformer($transformer, true);
     }
 
-    public function finishView(FormView $view, FormInterface $form, array $options)
+    public function finishView(FormView $view, FormInterface $form, array $options): void
     {
         parent::finishView($view, $form, $options);
         // make variables available to the view
@@ -137,7 +137,7 @@ public function finishView(FormView $view, FormInterface $form, array $options)
     /**
      * @param OptionsResolver $resolver
      */
-    public function configureOptions(OptionsResolver $resolver)
+    public function configureOptions(OptionsResolver $resolver): void
     {
         $resolver->setDefaults([
                 'object_manager' => null,