Merge pull request #19 from DaveLiddament/fix/build-problems

FIX cs issue

Author: DaveLiddament

src/NamespaceVisibility.php

@@ -10,7 +10,7 @@
 final class NamespaceVisibility
 {
  public function __construct(
- ?string $namespace = null,
+ string $namespace = null,
  bool $excludeSubNamespaces = false,
  ) {
  }