scanner.setRange(range);
SpanTree tree = new SpanTree();
long start = Long.MAX_VALUE;
for (Entry<Key,Value> entry : scanner) {
RemoteSpan span = TraceFormatter.getRemoteSpan(entry);
tree.addNode(span);
start = min(start, span.start);
}
sb.append("<style>\n");
sb.append(" td.right { text-align: right }\n");
sb.append(" table.indent { position: relative; left: 10% }\n");