}

  data class ResponseBodyStart(
    override val timestampNs: Long,
    override val call: Call,
  ) : CallEvent()

  data class ResponseBodyEnd(
    override val timestampNs: Long,
    override val call: Call,
    val bytesRead: Long,
  ) : CallEvent() {
    override fun closes(event: CallEvent): Boolean = event is ResponseBodyStart && call == event.call