code: def wr_xlsx(self, fout_xlsx):
          
          from goatools.wr_tbl import wr_xlsx
          kws = {
              'title' : self.title,
              'hdrs' :["Dep/Lev",
                       "BP Depth", "MF Depth", "CC Depth",
                       "BP Level", "MF Level", "CC Level"]}
          wr_xlsx(fout_xlsx, self.get_data(), **kws)
docs: Write counts of GO terms at all levels and depths.