fieldSettingsFromConfigData example

  protected function mapFromStorageRecords(array $records) {
    foreach ($records as $id => &$record) {
      try {
        $class = $this->fieldTypeManager->getPluginClass($record['field_type']);
      }
      catch (PluginNotFoundException $e) {
        $config_id = $this->getPrefix() . $id;
        throw new PluginNotFoundException($record['field_type'], "Unable to determine class for field type '{$record['field_type']}' found in the '$config_id' configuration", $e->getCode(), $e);
      }
      $record['settings'] = $class::fieldSettingsFromConfigData($record['settings']);
    }
    return parent::mapFromStorageRecords($records);
  }

  /** * {@inheritdoc} */
  protected function mapToStorageRecord(EntityInterface $entity) {
    $record = parent::mapToStorageRecord($entity);
    $class = $this->fieldTypeManager->getPluginClass($record['field_type']);
    $record['settings'] = $class::fieldSettingsToConfigData($record['settings']);