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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def plot_groups_unplaced(self, fout_dir=".", **kws_pltargs):
 """Plot GO DAGs for groups of user GOs which are not in a section."""

        hdrgos = self.grprobj.get_hdrgos_unplaced()
        pltargs = PltGroupedGosArgs(self.grprobj, fout_dir=fout_dir, **kws_pltargs)
        return self._plot_groups_hdrgos(hdrgos, pltargs)