modules/custom/d_update/src/Updater.php
public function importConfig($module, $name, $hash) {
    $configPath = drupal_get_path('module', $module) . '/config/install';
    $source = new FileStorage($configPath);
    $data = $source->read($name);
    if (!$data || !$this->configManager->compare($name, $hash)) {
      return false;
    }

    return $this->configStorage->write($name, $data);
  }
public function importConfig($module, $name, $hash) {
    $configPath = drupal_get_path('module', $module) . '/config/install';
    $source = new FileStorage($configPath);
    $data = $source->read($name);
    if (!$data || !$this->configManager->compare($name, $hash)) {
      return false;
    }

    return $this->configStorage->write($name, $data);
  }
Import a config file.

@param string $module
Module name.
@param string $name
Config file name without .yml extension.
@param string $hash
Hashed array with config data.

@return bool
Returns if config was imported successfully.