@Nonnull
  @ReturnsMutableCopy
  public static ICommonsList <String> getAllColumnIDs (@Nonnull final ColumnSet aColumnSet)
  {
    final ICommonsList <String> ret = new CommonsArrayList<> ();
    getAllColumnIDs (aColumnSet, ret);
    return ret;
  }
@Nonnull
  @ReturnsMutableCopy
  public static ICommonsList <String> getAllColumnIDs (@Nonnull final ColumnSet aColumnSet)
  {
    final ICommonsList <String> ret = new CommonsArrayList<> ();
    getAllColumnIDs (aColumnSet, ret);
    return ret;
  }
@ Nonnull @ ReturnsMutableCopy public static ICommonsList < String > getAllColumnIDs ( @ Nonnull final ColumnSet aColumnSet ) { final ICommonsList < String > ret = new CommonsArrayList <> ( ) ; getAllColumnIDs ( aColumnSet , ret ) ; return ret ; }
Get the IDs of all contained columns

@param aColumnSet
The column set to scan. May not be <code>null</code>.
@return A non-<code>null</code> list of all column IDs. Never
<code>null</code> but maybe empty.
Get the IDs of all contained columns