diff --git a/src/AbstractCleaner.php b/src/AbstractCleaner.php
index 2932297..2635e41 100644
--- a/src/AbstractCleaner.php
+++ b/src/AbstractCleaner.php
@@ -87,7 +87,7 @@ abstract class AbstractCleaner
     /**
      * Get all values from the cleaner.
      *
-     * @return  array<int,array<string,string>>     The values.
+     * @return  array<int,ValueDescriptor>  The values.
      */
     abstract public function values(): array;
 
@@ -96,7 +96,7 @@ abstract class AbstractCleaner
      *
      * @param   string  $ns     The namespace
      *
-     * @return  array<int,array<string,string>>     The values.
+     * @return  array<int,ValueDescriptor>  The values.
      */
     public function related(string $ns): array
     {
diff --git a/src/Backend.php b/src/Backend.php
index 0552d56..da88439 100644
--- a/src/Backend.php
+++ b/src/Backend.php
@@ -73,6 +73,11 @@ class Backend extends dcNsProcess
         return true;
     }
 
+    /**
+     * Perfom direct action on module deletion.
+     *
+     * @param   dcModuleDefine  $define     The module
+     */
     protected static function moduleBeforeDelete(dcModuleDefine $define): void
     {
         if (dcCore::app()->blog?->settings->get('system')->get('no_uninstall_direct')) {
@@ -108,7 +113,12 @@ class Backend extends dcNsProcess
         }
     }
 
-    protected static function modulesToolsHeader()
+    /**
+     * Get backend URL of uninstaller js.
+     *
+     * @return  string  The URL
+     */
+    protected static function modulesToolsHeader(): string
     {
         return dcUtils::jsModuleLoad(My::id() . '/js/backend.js');
     }
diff --git a/src/Cleaner/Caches.php b/src/Cleaner/Caches.php
index ad140ca..c415b32 100644
--- a/src/Cleaner/Caches.php
+++ b/src/Cleaner/Caches.php
@@ -62,12 +62,12 @@ class Caches extends AbstractCleaner
     public function values(): array
     {
         $res = [];
-        foreach(self::getDirs(DC_TPL_CACHE) as $dir) {
+        foreach (self::getDirs(DC_TPL_CACHE) as $dir) {
             $res[] = new ValueDescriptor(
                 $dir['key'],
                 '',
                 (int) $dir['value']
-            ); 
+            );
         }
 
         return $res;
diff --git a/src/Cleaner/Plugins.php b/src/Cleaner/Plugins.php
index 163b82f..d69409f 100644
--- a/src/Cleaner/Plugins.php
+++ b/src/Cleaner/Plugins.php
@@ -58,12 +58,12 @@ class Plugins extends AbstractCleaner
         sort($dirs);
 
         $res = [];
-        foreach($dirs as $dir) {
+        foreach ($dirs as $dir) {
             $res[] = new ValueDescriptor(
                 $dir['key'],
                 '',
                 (int) $dir['value']
-            ); 
+            );
         }
 
         return $res;
diff --git a/src/Cleaner/Preferences.php b/src/Cleaner/Preferences.php
index 5b165da..09ac4a1 100644
--- a/src/Cleaner/Preferences.php
+++ b/src/Cleaner/Preferences.php
@@ -96,7 +96,7 @@ class Preferences extends AbstractCleaner
         $sql->from(dcCore::app()->prefix . dcWorkspace::WS_TABLE_NAME)
             ->columns([
                 $sql->as($sql->count('*'), 'counter'),
-                'pref_ws'
+                'pref_ws',
             ])
             ->where($sql->orGroup(['user_id IS NULL', 'user_id IS NOT NULL']))
             ->group('pref_ws');
@@ -124,7 +124,7 @@ class Preferences extends AbstractCleaner
         $sql->from(dcCore::app()->prefix . dcWorkspace::WS_TABLE_NAME)
             ->columns([
                 $sql->as($sql->count('*'), 'counter'),
-                'pref_id'
+                'pref_id',
             ])
             ->where($sql->orGroup(['user_id IS NULL', 'user_id IS NOT NULL']))
             ->and('pref_ws = ' . $sql->quote($ns))
diff --git a/src/Cleaner/Settings.php b/src/Cleaner/Settings.php
index 9f93c33..cf5510a 100644
--- a/src/Cleaner/Settings.php
+++ b/src/Cleaner/Settings.php
@@ -100,7 +100,7 @@ class Settings extends AbstractCleaner
         $sql->from(dcCore::app()->prefix . dcNamespace::NS_TABLE_NAME)
             ->columns([
                 $sql->as($sql->count('*'), 'counter'),
-                'setting_ns'
+                'setting_ns',
             ])
             ->where($sql->orGroup(['blog_id IS NULL', 'blog_id IS NOT NULL']))
             ->group('setting_ns');
@@ -128,7 +128,7 @@ class Settings extends AbstractCleaner
         $sql->from(dcCore::app()->prefix . dcNamespace::NS_TABLE_NAME)
             ->columns([
                 $sql->as($sql->count('*'), 'counter'),
-                'setting_id'
+                'setting_id',
             ])
             ->where($sql->orGroup(['blog_id IS NULL', 'blog_id IS NOT NULL']))
             ->and('setting_ns = ' . $sql->quote($ns))
diff --git a/src/Cleaner/Themes.php b/src/Cleaner/Themes.php
index 7b042a5..3dced85 100644
--- a/src/Cleaner/Themes.php
+++ b/src/Cleaner/Themes.php
@@ -63,12 +63,12 @@ class Themes extends AbstractCleaner
         sort($dirs);
 
         $res = [];
-        foreach($dirs as $dir) {
+        foreach ($dirs as $dir) {
             $res[] = new ValueDescriptor(
                 $dir['key'],
                 '',
                 (int) $dir['value']
-            ); 
+            );
         }
 
         return $res;
diff --git a/src/Cleaner/Vars.php b/src/Cleaner/Vars.php
index cd57032..58a232f 100644
--- a/src/Cleaner/Vars.php
+++ b/src/Cleaner/Vars.php
@@ -55,12 +55,12 @@ class Vars extends AbstractCleaner
     public function values(): array
     {
         $res = [];
-        foreach(self::getDirs(DC_VAR) as $dir) {
+        foreach (self::getDirs(DC_VAR) as $dir) {
             $res[] = new ValueDescriptor(
                 $dir['key'],
                 '',
                 (int) $dir['value']
-            ); 
+            );
         }
 
         return $res;
diff --git a/src/Cleaner/Versions.php b/src/Cleaner/Versions.php
index 7fd4ec4..c16561d 100644
--- a/src/Cleaner/Versions.php
+++ b/src/Cleaner/Versions.php
@@ -66,7 +66,7 @@ class Versions extends AbstractCleaner
     public function values(): array
     {
         $sql = new SelectStatement();
-        $rs = $sql
+        $rs  = $sql
             ->from(dcCore::app()->prefix . dcCore::VERSION_TABLE_NAME)
             ->columns(['module', 'version'])
             ->select();