[RTKO] default volatile on setupOpac

library/Class/DigitalResource.php

@@ -23,9 +23,9 @@
 class Class_DigitalResource extends Class_Entity {
   use Trait_StormFileSystem;
 
+  protected static ?Storm_Collection $_plugins = null;
   protected static $_instance;
-  protected $_plugins, $_batches;
-
+  protected $_batches;
 
   public static function getInstance() {
     if(!static::$_instance)
@@ -40,11 +40,11 @@ class Class_DigitalResource extends Class_Entity {
   }
 
 
-  public function bootstrap($front_controller) {
-    $this->getPlugins()->eachDo(
-                                function($config) use ($front_controller) {
-                                  $config->registerFrontController($front_controller);
-                                });
+  public function bootstrap(Zend_Controller_Front $front_controller): self
+  {
+    $this->getPlugins()->eachDo(fn($config) => $config->registerFrontController($front_controller));
+
+    return $this;
   }
 
 
@@ -393,14 +393,16 @@ class Class_DigitalResource extends Class_Entity {
   }
 
 
-  protected function getPlugins() {
-    if(isset($this->_plugins))
-      return $this->_plugins;
+  protected function getPlugins(): Storm_Collection
+  {
+    if (static::$_plugins)
+      return static::$_plugins;
 
-    $directories = new Storm_Collection($this->getFileSystem()->directoryNamesAt($this->getBaseDir()));
-    return $this->_plugins = $directories
-      ->collect(function($dirname) { return $this->configFor($dirname); })
-      ->reject(function($config) { return !$config; });
+    $directories = new Storm_Collection($this->getFileSystem()
+                                        ->directoryNamesAt($this->getBaseDir()));
+    return static::$_plugins = $directories
+      ->collect(fn($dirname) => $this->configFor($dirname))
+      ->reject(fn($config) => ! $config);
   }