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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 writeInfoLine(self, stream, fromUUID, size):
 """ Write one line of diff information. """

        if size is None or fromUUID is None:
            return
        if not isinstance(size, int):
            logger.warning("Bad size: %s", size)
            return
        stream.write(str("%s\t%s\t%d\n" % (
            self.uuid,
            fromUUID,
            size,
        )))