### Question:
NotificationEditorWidgetViewImpl extends Composite implements NotificationEditorWidgetView { protected KeyDownHandler getEscDomHandler() { return event -> { if (event.getNativeKeyCode() == KeyCodes.KEY_ESCAPE) { close(); } }; } @Inject  NotificationEditorWidgetViewImpl(final MultipleSelectorInput multipleSelectorInputUsers,
                                            final MultipleSelectorInput multipleSelectorInputGroups,
                                            final LiveSearchDropDown liveSearchFromDropDown,
                                            final LiveSearchDropDown liveSearchReplyToDropDown,

                                            final AssigneeLiveSearchService assigneeLiveSearchServiceFrom,
                                            final AssigneeLiveSearchService assigneeLiveSearchServiceReplyTo,
                                            final AssigneeLiveSearchService assigneeLiveSearchServiceUsers,
                                            final AssigneeLiveSearchService assigneeLiveSearchServiceGroups); @Override void hideRepeatNotificationDiv(); @Override void showRepeatNotificationDiv(); @Override void showRepeatNotificationPanel(); @Override void hideRepeatNotificationPanel(); @PostConstruct void init(); @Override void init(final Presenter presenter); @Override void createOrEdit(NotificationWidgetView parent, NotificationRow row); @Override void addFrom(String from); @Override void addReplyTo(String replyTo); @Override void addUserToLiveSearch(String user); @Override void addUsersToSelect(List<String> users); @Override void addGroupToLiveSearch(String group); @Override void addGroupsToSelect(List<String> groups); @Override void setExpressionTextValue(String value); @Override void setExpirationDateTime(NotificationRow row); @Override void enableRepeatNotification(Date dateTime, String timeZone, String period, String repeatCount); @Override void disableRepeatNotification(Date dateTime, String timeZone); @Override void setReadOnly(boolean readOnly); @Override void setExpirationTimePeriod(String iso); @Override void ok(); void markEmailsAsCorrect(); @Override void setValidationFailed(String incorrectValue);  }### Answer:
@Test public void testGetEscDomHandler() { Assert.assertNotNull(test.getEscDomHandler()); }