### Question:
ListEditorDefinition extends BaseEditorDefinition<List, ListGridData> { @Override public Optional<List> getModelClass() { return Optional.of(new List()); } ListEditorDefinition(); @Inject  ListEditorDefinition(final DefinitionUtils definitionUtils,
                                final SessionManager sessionManager,
                                final SessionCommandManager<AbstractCanvasHandler> sessionCommandManager,
                                final @DMNEditor DefaultCanvasCommandFactory canvasCommandFactory,
                                final Event<ExpressionEditorChanged> editorSelectedEvent,
                                final Event<RefreshFormPropertiesEvent> refreshFormPropertiesEvent,
                                final Event<DomainObjectSelectionEvent> domainObjectSelectionEvent,
                                final ListSelectorView.Presenter listSelector,
                                final TranslationService translationService,
                                final @DMNEditor Supplier<ExpressionEditorDefinitions> expressionEditorDefinitionsSupplier,
                                final ValueAndDataTypePopoverView.Presenter headerEditor,
                                final @DMNEditor ReadOnlyProvider readOnlyProvider); @Override ExpressionType getType(); @Override String getName(); @Override Optional<List> getModelClass(); @Override void enrich(final Optional<String> nodeUUID,
                       final HasExpression hasExpression,
                       final Optional<List> expression); @Override @SuppressWarnings("unused") Optional<BaseExpressionGrid<? extends Expression, ? extends GridData, ? extends BaseUIModelMapper>> getEditor(final GridCellTuple parent,
                                                                                                                         final Optional<String> nodeUUID,
                                                                                                                         final HasExpression hasExpression,
                                                                                                                         final Optional<HasName> hasName,
                                                                                                                         final boolean isOnlyVisualChangeAllowed,
                                                                                                                         final int nesting);  }### Answer:
@Test public void testModelDefinition() { final Optional<List> oModel = definition.getModelClass(); assertThat(oModel).isPresent(); }