code: private <C extends AbstractConfiguration> C setupConfiguration(C configuration) {
      configuration.setListDelimiter(',');
      configuration.setDelimiterParsingDisabled(false);
      return configuration;
    }
docs: Sets attributes of the configuration to common values. Pass any Configuration objects
  created by this helper to this method to ensure consistency.
  
  @param configuration the new configuration to set up
  @return the same configuration that was passed, updated with common attribute values