@Nullable
    public Data createState(@Nullable List<? extends MergeLineFragment> fragments,
                            @NotNull FoldingModelSupport.Settings settings) {
      return createState(fragments, countLines(myEditors), settings);
    }
@Nullable
    public Data createState(@Nullable List<? extends MergeLineFragment> fragments,
                            @NotNull FoldingModelSupport.Settings settings)