code: public final ReadOnlyObjectProperty<T> dateControlProperty() {
          if (dateControl == null) {
              dateControl = new ReadOnlyObjectWrapper<>(this, "dateControl", _dateControl); //$NON-NLS-1$
          }
  
          return dateControl.getReadOnlyProperty();
      }
docs: The date control where the entry view is shown.
  
  @return the date control