void close()

Garbage collect the instance when you are done with it

Source

void close() {
  _wordData = null;
  _wordLength = null;
  _totalWord = null;
  _compressed = null;
  _byteAcc = null;

  if (_books != null) {
    for (int i = 0; i < _books.length; i++) {
      if (_books[i] != null) {
        _books[i].close();
        _books[i] = null;
      }
    }
  }
  if (_pdbAccess != null) {
    _pdbAccess.close();
    _pdbAccess = null;
  }
}