code: private boolean isKeysConfigChanged(String oldKeyImportFile, Long oldKeyTokenExpiration) {
          return ((oldKeyImportFile.equals(keyImportFile) == false) || (oldKeyTokenExpiration != keyTokenExpiration));
      }
docs: The keys config is changed if the file or expiration were modified.
  Changing the password by itself must not be considered a config change that should trigger a keys reload.