Corrige les alerts PHPStan.

src/Model/Arrow/BaseArrow.php

@@ -64,6 +64,11 @@ class BaseArrow implements ArrowInterface
      */
     private $targetCardinality;
 
+    /**
+     * @var mixed|null
+     */
+    private $label;
+
     public function __construct(
         NodeInterface $source,
         NodeInterface $target,

src/Model/ClassVisitor.php

@@ -49,6 +49,11 @@ class ClassVisitor implements ClassVisitorInterface
      */
     protected $decorator;
 
+    /**
+     * @var array<string, NodeInterface>
+     */
+    private $nodes;
+
     public function __construct(
         DecoratorInterface $decorator = null,
         ClassFilterInterface $filter = null,

src/Model/Decorator/NullDecorator.php

@@ -23,6 +23,7 @@ namespace Irstea\PlantUmlBundle\Model\Decorator;
 use Irstea\PlantUmlBundle\Model\ClassVisitorInterface;
 use Irstea\PlantUmlBundle\Model\DecoratorInterface;
 use Irstea\PlantUmlBundle\Model\NodeInterface;
+use Irstea\PlantUmlBundle\Utils\Singleton;
 use ReflectionClass;
 
 /**
@@ -30,7 +31,7 @@ use ReflectionClass;
  */
 class NullDecorator implements DecoratorInterface
 {
-    use \Irstea\PlantUmlBundle\Utils\Singleton;
+    use Singleton;
 
     public function decorate(ReflectionClass $class, NodeInterface $node, ClassVisitorInterface $visitor)
     {

src/Model/Filter/AbstractListFilter.php

@@ -28,6 +28,11 @@ use ReflectionClass;
  */
 abstract class AbstractListFilter implements ClassFilterInterface
 {
+    /**
+     * string.
+     */
+    protected const CONF_TYPE = 'UNDEFINED';
+
     /**
      * @var string[]
      */

src/Model/Namespace_/AbstractNamespace.php

@@ -30,6 +30,11 @@ use Irstea\PlantUmlBundle\Writer\WriterInterface;
  */
 abstract class AbstractNamespace implements WritableInterface, NamespaceInterface
 {
+    /**
+     * string.
+     */
+    protected const CONF_TYPE = 'UNDEFINED';
+
     /**
      * @var NodeInterface[]
      */

src/Utils/Singleton.php

@@ -30,8 +30,12 @@ trait Singleton
      */
     private static $instance;
 
+    final protected function __construct()
+    {
+    }
+
     /**
-     * @return self
+     * @return static
      */
     public static function instance()
     {