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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 save_shared_file(self, sharekey=None):
 """ Save a SharedFile to your Shake. Args: sharekey (str):
 Sharekey for the file to save. Returns: SharedFile saved to your shake. """

        endpoint = '/api/sharedfile/{sharekey}/save'.format(sharekey=sharekey)
        data = self._make_request("POST", endpoint=endpoint, data=None)

        try:
            sf = SharedFile.NewFromJSON(data)
            sf.saved = True
            return sf
        except:
            raise Exception("{0}".format(data['error']))