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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 add_email_addresses(self, addresses=[]):
 """Add the email addresses in ``addresses`` to the authenticated user's account. :param list addresses: (optional), email addresses to be added :returns: list of email addresses """

        json = []
        if addresses:
            url = self._build_url('user', 'emails')
            json = self._json(self._post(url, data=addresses), 201)
        return json