code: def emit(self, span_datas):
          
          jaeger_spans = self.translate_to_jaeger(span_datas)
  
          batch = jaeger.Batch(
              spans=jaeger_spans,
              process=jaeger.Process(serviceName=self.service_name))
  
          if self.collector is not None:
              self.collector.export(batch)
          self.agent_client.export(batch)
docs: :type span_datas: list of :class:
              `~opencensus.trace.span_data.SpanData`
          :param span_datas:
              SpanData tuples to emit