OEL-4511: Simpler functions.

Author: tibi2303

src/DrupalCompatibility.php

@@ -5,6 +5,7 @@
 namespace Drupal\oe_bootstrap_theme;
 
 use Drupal\Component\Utility\DeprecationHelper;
+use Drupal\Core\Extension\ThemeSettingsProvider;
 
 /**
  * Handles Drupal core compatibility behaviors.
@@ -31,17 +32,8 @@ public static function themeGetSetting(string $setting, ?string $theme = NULL):
     return DeprecationHelper::backwardsCompatibleCall(
       \Drupal::VERSION,
       self::THEME_SETTINGS_PROVIDER_VERSION,
-      static function () use ($setting, $theme): mixed {
-        $settings_provider = \Drupal::service('Drupal\Core\Extension\ThemeSettingsProvider');
-        if (is_object($settings_provider) && method_exists($settings_provider, 'getSetting')) {
-          return $settings_provider->getSetting($setting, $theme);
-        }
-
-        throw new \RuntimeException('ThemeSettingsProvider::getSetting() is not available.');
-      },
-      static function () use ($setting, $theme): mixed {
-        return \theme_get_setting($setting, $theme);
-      }
+      fn () => \Drupal::service(ThemeSettingsProvider::class)->getSetting($setting, $theme),
+      fn () =>\theme_get_setting($setting, $theme),
     );
   }