ISTWCMS-4032: Adding one more function to interface, and adding more comments.

src/Service/UWService.php

@@ -3,10 +3,11 @@
 namespace Drupal\uw_cfg_common\Service;
 
 use Drupal\Core\Entity\EntityInterface;
+use Drupal\node\Entity\Node;
 use Drupal\node\NodeInterface;
 
 /**
- * Class UWService.
+ * Class UWService
  *
  * @package Drupal\uw_cfg_common\Service
  */
@@ -48,7 +49,7 @@ class UWService implements UWServiceInterface {
    * {@inheritDoc}
    */
   public function getTeaserContent(NodeInterface $node, array $variables_to_get, string $teaser_type): array {
-
+    $variables = [];
     // Step through each of the variables to get and set the variables for the
     // teaser content.
     foreach ($variables_to_get as $variable_to_get) {

src/Service/UWServiceInterface.php

@@ -3,9 +3,14 @@
 namespace Drupal\uw_cfg_common\Service;
 
 use Drupal\Core\Entity\EntityInterface;
+use Drupal\node\NodeInterface;
 
 /**
- * Interface for UW services.
+ * Interface UWServiceInterface
+ *
+ * Interface that is collection of common functions used throughout custom blocks.
+ *
+ * @package Drupal\uw_cfg_common\Service
  */
 interface UWServiceInterface {
 
@@ -22,4 +27,18 @@ interface UWServiceInterface {
    */
   public function prepareResponsiveImage(EntityInterface $entity, string $image_style): array;
 
+  /**
+   * Prepares teaser.
+   *
+   * @param \Drupal\node\NodeInterface $node
+   *   Node entity.
+   * @param array $variables_to_get
+   *   List of variables to return.
+   * @param string $teaser_type
+   *   Teaser type.
+   *
+   * @return array
+   *   Array of variables and their values.
+   */
+  public function getTeaserContent(NodeInterface $node, array $variables_to_get, string $teaser_type): array;
 }