@Override
    public void prepare(@NotNull List<? extends ArrangementEntryWrapper<E>> toArrange, @NotNull Context<E> context) {
      myWrappers.clear();
      myWrappers.addAll(toArrange);
      for (ArrangementEntryWrapper<E> wrapper : toArrange) {
        wrapper.updateBlankLines(myDocument);
      }
    }
@Override
    public void prepare(@NotNull List<? extends ArrangementEntryWrapper<E>> toArrange, @NotNull Context<E> context)