Where are the spans collected?

[rajib76]

In the runners run_async, I see the below code. Where is this span created, how do I see the traces and spans?

with tracer.start_as_current_span('invocation'):
  session = self.session_service.get_session(
      app_name=self.app_name, user_id=user_id, session_id=session_id
  )