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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 freeze(self):
 """Call this method if you want to make your response object ready for being pickled. This buffers the generator if there is one. It will also set the `Content-Length` header to the length of the body. .. versionchanged:: 0.6 The `Content-Length` header is now set. """

        # we explicitly set the length to a list of the *encoded* response
        # iterator.  Even if the implicit sequence conversion is disabled.
        self.response = list(self.iter_encoded())
        self.headers['Content-Length'] = str(sum(map(len, self.response)))