Issue #3257291: Fix the issues reported by phpcs

Closes #3257291

src/ExternalLibrary/Asset/AssetLibrary.php

@@ -18,14 +18,12 @@ use Drupal\libraries\ExternalLibrary\Type\LibraryTypeInterface;
 class AssetLibrary extends LibraryBase implements
   AssetLibraryInterface,
   LocalLibraryInterface,
-  RemoteLibraryInterface
-{
+  RemoteLibraryInterface {
 
   use
     LocalLibraryTrait,
     RemoteLibraryTrait,
-    LocalRemoteAssetTrait
-  ;
+    LocalRemoteAssetTrait;
 
   /**
    * An array containing the CSS assets of the library.
@@ -44,6 +42,8 @@ class AssetLibrary extends LibraryBase implements
   /**
    * An array of attachable asset library IDs that this library depends on.
    *
+   * @var array
+   *
    * @todo Explain the difference to regular dependencies.
    */
   protected $attachableDependencies = [];
@@ -86,6 +86,8 @@ class AssetLibrary extends LibraryBase implements
    *   The library manager that can be used to fetch dependencies.
    *
    * @return array
+   *   An array structure that includes the version, CSS, JS, and dependencies
+   *   for the library.
    *
    * @see \Drupal\libraries\ExternalLibrary\Asset\getAttachableAssetLibraries::getAttachableAssetLibraries()
    *
@@ -112,8 +114,10 @@ class AssetLibrary extends LibraryBase implements
    * Gets the locator of this library using the locator factory.
    *
    * @param \Drupal\Component\Plugin\Factory\FactoryInterface $locator_factory
+   *   The locator factory to be used for creating a locator instance.
    *
    * @return \Drupal\libraries\ExternalLibrary\Local\LocatorInterface
+   *   The locator instance used for locating the library files.
    *
    * @see \Drupal\libraries\ExternalLibrary\Local\LocalLibraryInterface::getLocator()
    */