'Constructs a MediaContext
:param sid: Fetch by unique media Sid
:returns: twilio.rest.api.v2010.account.message.media.MediaContext
:rtype: twilio.rest.api.v2010.account.message.media.MediaContext'

def __call__(self, sid):

    return MediaContext(self._version, account_sid=self._solution['account_sid'], message_sid=self._solution['message_sid'], sid=sid)
