Config::save

public Config::save($has_trusted_data = FALSE)

public function save($has_trusted_data = FALSE) {
  // Validate the configuration object name before saving.
  static::validateName($this->name);

  // If there is a schema for this configuration object, cast all values to
  // conform to the schema.
  if (!$has_trusted_data) {
    if ($this->typedConfigManager->hasConfigSchema($this->name)) {
      // Ensure that the schema wrapper has the latest data.
      $this->schemaWrapper = NULL;
      foreach ($this->data as $key => $value) {
        $this->data[$key] = $this->castValue($key, $value);
      }
    }
    else {
      foreach ($this->data as $key => $value) {
        $this->validateValue($key, $value);
      }
    }
  }

  $this->storage->write($this->name, $this->data);
  if (!$this->isNew) {
    Cache::invalidateTags($this->getCacheTags());
  }
  $this->isNew = FALSE;
  $this->eventDispatcher->dispatch(ConfigEvents::SAVE, new ConfigCrudEvent($this));
  $this->originalData = $this->data;
  // Potentially configuration schema could have changed the underlying data's
  // types.
  $this->resetOverriddenData();
  return $this;
}