Resolve #3413609 "2.0.0 beta1 convert doctrine"

Closes #3413609

modules/ui_patterns_field_formatters/src/Plugin/Derivative/FieldFormatterSourceDeriver.php

@@ -23,8 +23,8 @@ class FieldFormatterSourceDeriver extends EntityFieldSourceDeriverBase {
       $base_plugin_derivative,
       [
         "id" => $id,
-        "label" => t("Field formatter"),
-        "description" => t("Output of a field formatter."),
+        "label" => $this->t("Field formatter"),
+        "description" => $this->t("Output of a field formatter."),
         "metadata" => array_merge($base_plugin_derivative["metadata"], [
           'field_formatter' => TRUE,
         ]),
@@ -46,8 +46,8 @@ class FieldFormatterSourceDeriver extends EntityFieldSourceDeriverBase {
       $base_plugin_derivative,
       [
         "id" => $id,
-        "label" => t("Field formatter"),
-        "description" => t("Output of a field formatter."),
+        "label" => $this->t("Field formatter"),
+        "description" => $this->t("Output of a field formatter."),
         "metadata" => array_merge($base_plugin_derivative["metadata"], [
           'field_formatter' => TRUE,
         ]),