Fix psalm errors

Author: Kirill Nesmeyanov

src/DocBlock/Tag/TagFactory.php

@@ -6,7 +6,6 @@
 
 use TypeLang\PhpDocParser\DocBlock\Description;
 use TypeLang\PhpDocParser\DocBlock\DescriptionFactoryInterface;
-use TypeLang\PhpDocParser\DocBlock\Tag\TagInterface as TReturn;
 use TypeLang\PhpDocParser\DocBlock\TagFactoryInterface;
 
 /**

src/DocBlock/TagProvider.php

@@ -44,8 +44,10 @@ public function getIterator(): \Traversable
         foreach ($this->tags as $tag) {
             yield $tag;
 
-            if ($tag->getDescription() instanceof TagProviderInterface) {
-                yield from $tag->getDescription();
+            $description = $tag->getDescription();
+
+            if ($description instanceof TagProviderInterface) {
+                yield from $description;
             }
         }
     }

src/DocBlockFactory.php

@@ -48,6 +48,9 @@
 use TypeLang\PhpDocParser\DocBlock\TagFactoryInterface;
 use JetBrains\PhpStorm\Language;
 
+/**
+ * @psalm-suppress UndefinedAttributeClass : JetBrains language attribute may not be available
+ */
 final class DocBlockFactory implements DocBlockFactoryInterface
 {
     /**

src/DocBlockFactoryInterface.php

@@ -6,6 +6,9 @@
 
 use JetBrains\PhpStorm\Language;
 
+/**
+ * @psalm-suppress UndefinedAttributeClass : JetBrains language attribute may not be available
+ */
 interface DocBlockFactoryInterface
 {
     /**