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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_usr):
 """Plot each GO group."""

        # kws: go2color max_gos upper_trigger max_upper
        plotobj = PltGroupedGos(self)
        return plotobj.plot_groups_unplaced(fout_dir, **kws_usr)