docs: RuntimeException errorStoringSpans(List<Span> spans, Throwable e) {
      metrics.incrementSpansDropped(spans.size());
      // The exception could be related to a span being huge. Instead of filling logs,
      // print trace id, span id pairs
      StringBuilder msg = appendSpanIds(spans, new StringBuilder("Cannot store spans "));
      return doError(msg.toString(), e);
    }