Fix psalm errors

Author: cspray

README.md

@@ -4,13 +4,20 @@ Do you like final? _Really_ like it? Then enforce it on all your classes! When y
 
 ## Installation
 
-### Running Psalm 5
+### Running Psalm 6
 
 ```
 composer require --dev cspray/phinal
 vendor/bin/psalm-plugin enable cspray/phinal
 ```
 
+### Running Psalm 5
+
+```
+composer require --dev cspray/phinal:2.1
+vendor/bin/psalm-plugin enable cspray/phinal
+```
+
 ### Running Psalm 4
 
 ```

psalm.xml.dist

@@ -4,6 +4,8 @@
     xmlns="https://getpsalm.org/schema/config"
     xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
     errorLevel="1"
+    findUnusedBaselineEntry="true"
+    findUnusedCode="true"
 >
     <projectFiles>
         <directory name="." />

src/Plugin.php

@@ -12,9 +12,9 @@
 use Psalm\Plugin\RegistrationInterface;
 
 /** @psalm-suppress UnusedClass */
-class Plugin implements PluginEntryPointInterface, AfterClassLikeAnalysisInterface
+final class Plugin implements PluginEntryPointInterface, AfterClassLikeAnalysisInterface
 {
-    /** @return void */
+    #[\Override]
     public function __invoke(RegistrationInterface $psalm, ?SimpleXMLElement $config = null): void
     {
         // Psalm allows arbitrary content to be stored under you plugin entry in
@@ -25,6 +25,7 @@ public function __invoke(RegistrationInterface $psalm, ?SimpleXMLElement $config
         $psalm->registerHooksFromClass($this::class);
     }
 
+    #[\Override]
     public static function afterStatementAnalysis(AfterClassLikeAnalysisEvent $event)
     {
         $stmt = $event->getStmt();

tests/_support/AcceptanceTester.php

@@ -19,7 +19,7 @@
  * @psalm-suppress UndefinedTrait
  * @psalm-suppress UnusedClass
 */
-class AcceptanceTester extends \Codeception\Actor
+final class AcceptanceTester extends \Codeception\Actor
 {
     use _generated\AcceptanceTesterActions;
 

tests/_support/Helper/Acceptance.php

@@ -6,6 +6,6 @@
 // all public methods declared in helper class will be available in $I
 
 /** @psalm-suppress UnusedClass */
-class Acceptance extends \Codeception\Module
+final class Acceptance extends \Codeception\Module
 {
 }