@Test
public void testAppend() throws VetoException {

    final ActionWorkItemSetFieldCol52 column = new ActionWorkItemSetFieldCol52();
    column.setWorkItemName(WORK_ITEM_NAME);
    column.setHeader("col1");
    modelSynchronizer.appendColumn(column);
    assertEquals(2,
                 model.getActionCols().size());
    assertEquals(5,
                 uiModel.getColumns().size());
    assertTrue(uiModel.getColumns().get(4) instanceof BooleanUiColumn);
    assertEquals(true,
                 ((BaseMultipleDOMElementUiColumn) uiModel.getColumns().get(4)).isEditable());
}