minor #32786 add parameter type declarations to private methods (xabbuh)

This PR was merged into the 4.4 branch.

Discussion
----------

add parameter type declarations to private methods

| Q             | A
| ------------- | ---
| Branch?       | 4.4
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets |
| License       | MIT
| Doc PR        |

Commits
-------

1b2aaa4a06 add parameter type declarations to private methods

Author: fabpot

Definition/Dumper/YamlReferenceDumper.php

@@ -182,7 +182,7 @@ private function writeLine(string $text, int $indent = 0)
         $this->reference .= sprintf($format, $text)."\n";
     }
 
-    private function writeArray(array $array, $depth)
+    private function writeArray(array $array, int $depth)
     {
         $isIndexed = array_values($array) === $array;
 

FileLocator.php

@@ -81,7 +81,7 @@ public function locate($name, $currentPath = null, $first = true)
      *
      * @return bool
      */
-    private function isAbsolutePath($file)
+    private function isAbsolutePath(string $file)
     {
         if ('/' === $file[0] || '\\' === $file[0]
             || (\strlen($file) > 3 && ctype_alpha($file[0])

Loader/FileLoader.php

@@ -125,7 +125,7 @@ protected function glob(string $pattern, bool $recursive, &$resource = null, boo
         yield from $resource;
     }
 
-    private function doImport($resource, $type = null, bool $ignoreErrors = false, $sourceResource = null)
+    private function doImport($resource, string $type = null, bool $ignoreErrors = false, $sourceResource = null)
     {
         try {
             $loader = $this->resolve($resource, $type);

ResourceCheckerConfigCache.php

@@ -152,7 +152,7 @@ private function getMetaFile()
         return $this->file.'.meta';
     }
 
-    private function safelyUnserialize($file)
+    private function safelyUnserialize(string $file)
     {
         $e = null;
         $meta = false;