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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 clear_cached_values(self):
 """Removes all of the cached values and interpolators """

        self._prof_interp = None
        self._prof_y = None
        self._prof_z = None
        self._marg_interp = None
        self._marg_z = None
        self._post = None
        self._post_interp = None
        self._interp = None
        self._ret_type = None