Issue #3269000 by longwave, quietone, Shashwat Purav: fix docblock of...

Issue #3269000 by longwave, quietone, Shashwat Purav: fix docblock of TestFieldWidgetMultiple::isApplicable

(cherry picked from commit 09672b4d)

core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldWidget/TestFieldWidgetMultiple.php

@@ -93,8 +93,16 @@ public static function multipleValidate($element, FormStateInterface $form_state
   }
 
   /**
-   * {@inheritdoc}
-   * Used in \Drupal\field\Tests\EntityReference\EntityReferenceAdminTest::testAvailableFormatters().
+   * Test is the widget is applicable to the field definition.
+   *
+   * @param \Drupal\Core\Field\FieldDefinitionInterface $field_definition
+   *   The field definition that should be checked.
+   *
+   * @return bool
+   *   TRUE if the machine name of the field is not equals to
+   *   field_onewidgetfield, FALSE otherwise.
+   *
+   * @see \Drupal\Tests\field\Functional\EntityReference\EntityReferenceAdminTest::testAvailableFormatters
    */
   public static function isApplicable(FieldDefinitionInterface $field_definition) {
     // Returns FALSE if machine name of the field equals field_onewidgetfield.