def _visible_changed(self):

        self.tool_bar.EnableTool(self.control_id, self.visible and self.enabled)

        return
:return: a list of lists of word/tag/IOB tuples
dataset/ETHPy150Open enthought/pyface/pyface/ui/wx/action/action_item.py/_Tool._visible_changed--crossover with--dataset/ETHPy150Open nltk/nltk/nltk/corpus/reader/conll.py/ConllCorpusReader.iob_sents