docs: def _timing(f, logs_every=100):
    """Decorator to time function calls and log the stats."""
    @functools.wraps(f)
    def wrap(*args, **kw):
      """The timer function."""
      ts = _time.time()
      result = f(*args, **kw)
      te = _time.time()
      qj._call_counts[f] += 1
      qj._timings[f] += (te - ts)
      count = qj._call_counts[f]
      if count % logs_every == 0:
        qj(x='%2.4f seconds' % (qj._timings[f] / count),
           s='Average timing for %s across %d call%s' % (f, count, '' if count == 1 else 's'), _depth=2)
      return result
    return wrap