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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 save_all_figures_as(self):
 """Save all the figures to a file."""

        self.redirect_stdio.emit(False)
        dirname = getexistingdirectory(self, caption='Save all figures',
                                       basedir=getcwd_or_home())
        self.redirect_stdio.emit(True)
        if dirname:
            return self.save_all_figures_todir(dirname)