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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_sections(self, fout_dir=".", **kws_usr):
 """Plot groups of GOs which have been placed in sections."""

        kws_plt, _ = self._get_kws_plt(None, **kws_usr)
        PltGroupedGos(self).plot_sections(fout_dir, **kws_plt)