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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 _verify_control_structure(self, device_info, control_info=None):
 """Verify that a control structure is still valid or find one. Returns: ControlStructure: The verified or discovered control structure. """


        if control_info is None:
            control_info = self._find_control_structure(device_info.ram_start, device_info.ram_size)

        #FIXME: Actually reread the memory here to verify that the control structure is still valid
        return control_info