### Question:
FunctionGridCell extends DMNGridCell<T> { @Override public Optional<Editor> getEditor() { return Optional.of(listSelector); } FunctionGridCell(final GridCellValue<T> value,
                            final ListSelectorView.Presenter listSelector); @Override Optional<Editor> getEditor();  }### Answer:
@Test public void testGetEditor() { assertThat(cell.getEditor()).isNotEmpty(); assertThat(cell.getEditor().get()).isSameAs(listSelector); }