protected ConfigImporter::checkOp($collection, $op, $name)

public CachedStorage::exists($name) Returns

Exception for when hook_config_

public Query::execute() Execute the

protected DatabaseStorage::ensureTableExists()

public Condition::exists($field, $langcode

protected TypedConfigManager::getDefinitionWithReplacements($base_plugin_id

protected ArrayElement::createElement($definition, $value, $key)

public ConfigEntityStorageInterface

public QueryFactory::__construct(ConfigFactoryInterface