code: protected ListCellRenderer<? super EnumerationValue> getComboBoxRenderer(final InputColumn<?> inputColumn,
              final Map<InputColumn<?>, DCComboBox<EnumerationValue>> mappedEnumComboBoxes,
              final EnumerationValue[] enumConstants) {
          return new EnumComboBoxListRenderer();
      }
docs: Gets the renderer of items in the comboboxes presenting the enum values.
  
  @param enumConstants
  @param mappedEnumComboBoxes
  @param inputColumn
  
  @return