Implement workflow handlers for stored objects

Added new interface, EntityWorkflowWithStoredObjectHandlerInterface, which provides methods to handle workflows associated with stored objects. Two classes, AccompanyingPeriodWorkEvaluationDocumentWorkflowHandler and AccompanyingCourseDocumentWorkflowHandler, have been updated to implement this new interface. The EntityWorkflowManager class has also been updated to handle workflows associated with stored objects.

src/Bundle/ChillMainBundle/Workflow/EntityWorkflowManager.php

@@ -11,6 +11,7 @@ declare(strict_types=1);
 
 namespace Chill\MainBundle\Workflow;
 
+use Chill\DocStoreBundle\Entity\StoredObject;
 use Chill\MainBundle\Entity\Workflow\EntityWorkflow;
 use Chill\MainBundle\Workflow\Exception\HandlerNotFoundException;
 use Symfony\Component\Workflow\Registry;
@@ -37,4 +38,15 @@ class EntityWorkflowManager
     {
         return $this->registry->all($entityWorkflow);
     }
+
+    public function getAssociatedStoredObject(EntityWorkflow $entityWorkflow): ?StoredObject
+    {
+        foreach ($this->handlers as $handler) {
+            if ($handler instanceof EntityWorkflowWithStoredObjectHandlerInterface && $handler->supports($entityWorkflow)) {
+                return $handler->getAssociatedStoredObject($entityWorkflow);
+            }
+        }
+
+        return null;
+    }
 }