code: @Override
  	public String getColumnName(final int column) {
  		Object id = null;
  		// This test is to cover the case when
  		// getColumnCount has been subclassed by mistake ...
  		if (column < this.columnIdentifiers.size() && column >= 0) {
  			id = this.columnIdentifiers.elementAt(column);
  		}
  		return id == null ? super.getColumnName(column) : id.toString();
  	}
docs: Returns the column name.
  
  @param column the column
  @return a name for this column using the string value of the appropriate
  member in <code>columnIdentifiers</code>. If
  <code>columnIdentifiers</code> does not have an entry for this index,
  returns the default name provided by the superclass.