class StringColumn extends AbstractStringColumn<StringColumn> {

  public DoubleColumn asDoubleColumn() {
    return DoubleColumn.create(this.name(), asDoubleArray());
  }

  private  StringColumn(String name, Collection<String> strings);
  private  StringColumn(String name, DictionaryMap map);
  private  StringColumn(String name);
  private  StringColumn(String name, String[] strings);

}