drop asserts where not needed

src/DocBlock/Serializer.php

@@ -45,14 +45,8 @@ class Serializer
      * @param int|null $lineLength The max length of a line or NULL to disable line wrapping.
      * @param DocBlock\Tags\Formatter $tagFormatter A custom tag formatter, defaults to PassthroughFormatter.
      */
-    public function __construct(int $indent = 0, string $indentString = ' ', bool $indentFirstLine = true, int $lineLength = null, DocBlock\Tags\Formatter $tagFormatter = null)
+    public function __construct(int $indent = 0, string $indentString = ' ', bool $indentFirstLine = true, ?int $lineLength = null, ?DocBlock\Tags\Formatter $tagFormatter = null)
     {
-        Assert::integer($indent);
-        Assert::string($indentString);
-        Assert::boolean($indentFirstLine);
-        Assert::nullOrInteger($lineLength);
-        Assert::nullOrIsInstanceOf($tagFormatter, 'phpDocumentor\Reflection\DocBlock\Tags\Formatter');
-
         $this->indent = $indent;
         $this->indentString = $indentString;
         $this->isFirstLineIndented = $indentFirstLine;

src/DocBlock/Tags/Author.php

@@ -84,8 +84,6 @@ final class Author extends BaseTag implements Factory\StaticMethod
      */
     public static function create(string $body)
     {
-        Assert::string($body);
-
         $splitTagContent = preg_match('/^([^\<]*)(?:\<([^\>]*)\>)?$/u', $body, $matches);
         if (!$splitTagContent) {
             return null;

src/DocBlock/Tags/Link.php

@@ -35,8 +35,6 @@ final class Link extends BaseTag implements Factory\StaticMethod
      */
     public function __construct(string $link, Description $description = null)
     {
-        Assert::string($link);
-
         $this->link = $link;
         $this->description = $description;
     }

src/DocBlock/Tags/Since.php

@@ -60,7 +60,6 @@ final class Since extends BaseTag implements Factory\StaticMethod
         DescriptionFactory $descriptionFactory = null,
         TypeContext $context = null
     ) {
-        Assert::nullOrString($body);
         if (empty($body)) {
             return new static();
         }