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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 reset_all_to_coefficients(self):
 """ Resets the IOSystem and all extensions to coefficients. This method calls reset_to_coefficients for the IOSystem and for all Extensions in the system Note ----- The system can not be reconstructed after this steps because all absolute data is removed. Save the Y data in case a reconstruction might be necessary. """

        self.reset_to_coefficients()
        [ee.reset_to_coefficients() for ee in self.get_extensions(data=True)]
        self.meta._add_modify("Reset full system to coefficients")
        return self