code: @Nonnull
    @ReturnsMutableCopy
    public ICommonsList <IVATItem> findAll (@Nonnull final Predicate <? super IVATItem> aFilter)
    {
      final ICommonsList <IVATItem> ret = new CommonsArrayList <> ();
      CollectionHelper.findAll (m_aAllVATItems.values (), aFilter, ret::add);
      return ret;
    }
docs: Find all matching VAT items.
  
  @param aFilter
  The filter to be used. May not be <code>null</code>.
  @return A non-<code>null</code> but maybe empty list with all matching
  {@link IVATItem} objects.
  @since 5.0.5