code: private function setCopyValues($values)
      {
          if (isset($values['debug']['emailLog']) && $values['debug']['emailLog'] === true) {
              $values['debug']['emailLog'] = 'onError';
          }
          foreach (array('emailFrom','emailFunc','emailTo') as $key) {
              if (isset($values['debug'][$key]) && !isset($values['errorEmailer'][$key])) {
                  // also set for errorEmailer
                  $values['errorEmailer'][$key] = $values['debug'][$key];
              }
          }
          return $values;
      }
docs: some config values exist in multiple modules
  
  @param array $values values
  
  @return array