How to get all HighlightsContainer of editor?

Hi All

   How to get all HighlightsContainer of editor? Someone told me this code works, but HighlightingManager class is not in public package in netbeans 8.2, so it failed to compile.


HighlightsContainer hc = HighlightingManager.getInstance(jtc).getBottomHighlights();


thanks

from Peter