telemetry:
  instrumentation:
    instruments:
      router:
        http.server.active_requests: false
        http.server.request.duration: false
        "custom_counter":
          description: "count of requests"
          type: counter
          unit: "unit"
          value: unit
          # This instrument should not be triggered as the condition is never true
          condition:
            eq:
              - response_header: "never-true"
              - "true"