fixed PHPStan errors

Author: k00ni

tests/Samples/Info/SampleProvider.php

@@ -24,7 +24,7 @@ public static function samples(): iterable {
                 throw new RuntimeException();
             }
 
-            /** @var object{version: float, password: ?string, title: ?string, producer: ?string, author: ?string, creator: ?string, creationDate: ?\DateTimeImmutable, modificationDate: ?\DateTimeImmutable, pages: list<object{content: string, images?: string[]}>} $content */
+            /** @var object{version: float, password: ?string, title: ?string, producer: ?string, author: ?string, creator: ?string, creationDate: ?\DateTimeImmutable, modificationDate: ?\DateTimeImmutable, pages: list<object{content: string, images?: string[]}>, textPartsExpectedSomewhereInTheExtractedText: string[]|null} $content */
             $content = Yaml::parseFile($contentsPath, Yaml::PARSE_OBJECT_FOR_MAP | Yaml::PARSE_EXCEPTION_ON_INVALID_TYPE | Yaml::PARSE_DATETIME);
             if ($content->password !== null) {
                 continue;

tests/Samples/SamplesTest.php

@@ -22,9 +22,7 @@ public function testExternalSourcePDFs(FileInfo $fileInfo): void {
         $document = (new PdfParser())->parseFile($fileInfo->pdfPath);
 
         // PDF version
-        if (null !== $document->version) {
-            static::assertSame(Version::from(number_format($fileInfo->version / 10, 1)), $document->version);
-        }
+        static::assertSame(Version::from(number_format($fileInfo->version / 10, 1)), $document->version);
 
         // title
         if (null !== $fileInfo->title) {