Coding standards: Use StringTranslationTrait for translation

src/Plugin/Block/ContentListBlock.php

@@ -101,7 +101,7 @@ class ContentListBlock extends BlockBase {
 
     // Get the rendered title for the view.
     $the_title_render_array = [
-      '#markup' => t('@title', ['@title' => $title]),
+      '#markup' => $this->t('@title', ['@title' => $title]),
       '#allowed_tags' => ['h2'],
     ];
 
@@ -163,11 +163,11 @@ class ContentListBlock extends BlockBase {
       '#type' => 'select',
       '#title' => $this->t('Sort by'),
       '#options' => [
-        'title' => 'Title',
-        'type' => 'Content type',
-        'uid' => 'Author',
-        'revision_uid' => 'Last update by',
-        'changed' => 'Last updated',
+        'title' => $this->t('Title'),
+        'type' => $this->t('Content type'),
+        'uid' => $this->t('Author'),
+        'revision_uid' => $this->t('Last update by'),
+        'changed' => $this->t('Last updated'),
       ],
       '#default_value' => isset($this->configuration['sort_by']) ? $this->configuration['sort_by'] : 'last_updated',
     ];
@@ -177,8 +177,8 @@ class ContentListBlock extends BlockBase {
       '#type' => 'select',
       '#title' => $this->t('Sort order'),
       '#options' => [
-        'asc' => 'Ascending',
-        'desc' => 'Descending',
+        'asc' => $this->t('Ascending'),
+        'desc' => $this->t('Descending'),
       ],
       '#default_value' => isset($this->configuration['sort_order']) ? $this->configuration['sort_order'] : 'asc',
     ];

src/Plugin/Block/ContentManagementMenuBlock.php

@@ -93,7 +93,7 @@ class ContentManagementMenuBlock extends BlockBase implements ContainerFactoryPl
                 ];
 
                 $build[$id]['table'][$sec_id]['operations']['#links']['add'] = [
-                  'title' => t('Add'),
+                  'title' => $this->t('Add'),
                   'url' => $item->link->getUrlObject(),
                 ];
 

src/Plugin/Block/FormsListBlock.php

@@ -55,7 +55,7 @@ class FormsListBlock extends BlockBase {
 
     // Get the rendered title for the view.
     $the_title_render_array = [
-      '#markup' => t('@title', ['@title' => $title]),
+      '#markup' => $this->t('@title', ['@title' => $title]),
       '#allowed_tags' => ['h2'],
     ];