code: def get_tracer(self):
          
          sampled = self.should_sample()
  
          if sampled:
              self.span_context.trace_options.set_enabled(True)
              return context_tracer.ContextTracer(
                  exporter=self.exporter,
                  span_context=self.span_context)
          else:
              return noop_tracer.NoopTracer()
docs: Return a tracer according to the sampling decision.