Issue #3455113: Config action plugin IDs should be camel case.

Closes #3455113

core/lib/Drupal/Core/Config/Action/Plugin/ConfigAction/Deriver/EntityCreateDeriver.php

@@ -22,8 +22,8 @@ public function getDerivativeDefinitions($base_plugin_definition) {
     // These derivatives apply to all entity types.
     $base_plugin_definition['entity_types'] = ['*'];
 
-    $this->derivatives['ensure_exists'] = $base_plugin_definition + ['constructor_args' => ['exists' => Exists::ReturnEarlyIfExists]];
-    $this->derivatives['ensure_exists']['admin_label'] = $this->t('Ensure entity exists');
+    $this->derivatives['createIfNotExists'] = $base_plugin_definition + ['constructor_args' => ['exists' => Exists::ReturnEarlyIfExists]];
+    $this->derivatives['createIfNotExists']['admin_label'] = $this->t('Create entity if it does not exist');
 
     $this->derivatives['create'] = $base_plugin_definition + ['constructor_args' => ['exists' => Exists::ErrorIfExists]];
     $this->derivatives['create']['admin_label'] = $this->t('Entity create');