@Nullable
    private FoldedBlock getSelectedBlock(@NotNull EditorMouseEvent e) {
      int hoverLine = EditorUtil.yPositionToLogicalLine(myEditors[myIndex], e.getMouseEvent().getY());

      FoldedBlock foldedBlock = getBlockForLine(myIndex, hoverLine);
      if (foldedBlock != null) {
        FoldRegion region = foldedBlock.getRegion(myIndex);
        if (region != null) return foldedBlock;
      }
      return null;
    }
@Nullable
    private FoldedBlock getSelectedBlock(@NotNull EditorMouseEvent e)