public ReplaceTypeEmptyBlockItem(
     string text,
     IBlockFactory factory,
     TypeEmptyBlock empty)
     : base(text, factory)
 {
     emptyBlock = empty;
 }
 public ReplaceTypeEmptyBlockItem(
     string text,
     IEnumerable <Type> blockTypes,
     TypeEmptyBlock empty)
     : base(text, blockTypes)
 {
     emptyBlock = empty;
 }