Fix phpstan

Author: Jakob Tolkemit

src/Entity/FileContent.php

@@ -14,9 +14,9 @@ class FileContent implements ResourceInterface
     /** @var string */
     private $content;
 
-    public function __construct($content)
+    public function __construct(string $content)
     {
-        $this->content = (string) $content;
+        $this->content = $content;
     }
 
     public function getId(): int

src/Entity/OrderItemOption.php

@@ -60,7 +60,7 @@ class OrderItemOption implements OrderItemOptionInterface
     /** @var float */
     private $percent = 0;
 
-    /** @var FileContent */
+    /** @var ?FileContent */
     private $fileContent;
 
     /** {@inheritdoc} */
@@ -152,7 +152,7 @@ public function setCustomerOptionValue($value): void
         if ($this->customerOptionType === CustomerOptionTypeEnum::FILE) {
             $this->optionValue         = 'file-content';
             $this->customerOptionValue = null;
-            $this->fileContent         = new FileContent($value);
+            $this->fileContent         = new FileContent((string) $value);
 
             return;
         }

src/Migrations/Version20210303184909.php

@@ -20,7 +20,7 @@ final class Version20210303184909 extends AbstractMigration implements Container
     /** @var ?ContainerInterface */
     private $container;
 
-    public function setContainer(?ContainerInterface $container = null)
+    public function setContainer(?ContainerInterface $container = null): void
     {
         $this->container = $container;
     }