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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 _start_tracer(self, origin):
 """ Start a new Tracer object, and store it in self.tracers. """

        tracer = self._tracer_class(log=self.log)
        tracer.data = self.data
        fn = tracer.start(origin)
        self.tracers.append(tracer)
        return fn