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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 ToByteArray(self):
 """ Serialize self and get the byte stream. Returns: bytes: serialized object. """

        ms = StreamManager.GetStream()
        writer = BinaryWriter(ms)
        self.Serialize(writer)

        retval = ms.ToArray()
        StreamManager.ReleaseStream(ms)

        return retval