https://api.drupal.org/api/drupal/core%21modules%21user%21src%21AccountSettingsForm.php/function/AccountSettingsForm%3A%3AgetEditableConfigNames/11.x
function AccountSettingsForm::getEditableConfigNames | Drupal API
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https://api.drupal.org/api/drupal/core%21modules%21user%21src%21AccountSettingsForm.php/property/AccountSettingsForm%3A%3AmoduleHandler/10
AccountSettingsForm::$moduleHandler | Drupal API
drupalapi