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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(self):
 """ Visualize the process. :return: The generated figure. :rtype: matplotlib.Figure """

        fig, (ax1) = plt.subplots(1, 1, figsize=(10, 8))
        self.plot_pauli_transfer_matrix(ax1)
        return fig