@Override
public <C> void setDataProvider(final DataProvider<T, C> dataProvider, final SerializableFunction<String, C> filterConverter) {
    Objects.requireNonNull(dataProvider, "dataProvider cannot be null");
    Objects.requireNonNull(filterConverter, "filterConverter cannot be null");

    final SerializableFunction<String, C> convertOrNull = filterText -> {
        if (filterText == null || filterText.isEmpty()) {
            return null;
        }

        return filterConverter.apply(filterText);
    };

    final SerializableConsumer<C> providerFilterSlot = internalSetDataProvider(dataProvider, convertOrNull.apply(this.currentFilterText));

    this.filterSlot = filter -> providerFilterSlot.accept(convertOrNull.apply(filter));
}
 

@Override
public <C> void setDataProvider(final DataProvider<T, C> dataProvider, final SerializableFunction<String, C> filterConverter) {
    Objects.requireNonNull(dataProvider, "dataProvider cannot be null");
    Objects.requireNonNull(filterConverter, "filterConverter cannot be null");

    final SerializableFunction<String, C> convertOrNull = filterText -> {
        if (filterText == null || filterText.isEmpty()) {
            return null;
        }

        return filterConverter.apply(filterText);
    };

    final SerializableConsumer<C> providerFilterSlot = internalSetDataProvider(dataProvider, convertOrNull.apply(this.currentFilterText));

    this.filterSlot = filter -> providerFilterSlot.accept(convertOrNull.apply(filter));
}
 

protected Stream<T> getChildrenRecursively(T parent) {
    Supplier<Stream<T>> children = () -> getChildren(parent);
    Stream<T> items = children.get().flatMap((SerializableFunction<T, Stream<T>>)
            this::getChildrenRecursively);

    return Stream.concat(children.get(), items);
}
 

private Object getConvertedValue(HasValue<?> component) {
    if (component instanceof Converter) {
        Converter converter = (Converter) component;
        Result result = converter.convertToModel(component.getValue(), null);
        try {
            return result.getOrThrow(SerializableFunction.identity());
        } catch (Throwable throwable) {
            throw new MyCollabException(throwable);
        }
    }
    return component.getValue();
}