function updateLine(props) {
    traceLog.add('<updateLine>'); // [DEBUG/]
    var options = props.options, curStats = props.curStats, events = props.events,
      updated = false;

    updated = setStat(props, curStats, 'line_color', options.lineColor, events.cur_line_color) || updated;
    updated = setStat(props, curStats, 'line_colorTra', getAlpha(curStats.line_color)[0] < 1) || updated;
    updated = setStat(props, curStats, 'line_strokeWidth', options.lineSize,
      events.cur_line_strokeWidth) || updated;

    if (!updated) { traceLog.add('not-updated'); } // [DEBUG/]
    traceLog.add('</updateLine>'); // [DEBUG/]
    return updated;
  }
@param {props} props - `props` of `LeaderLine` instance.
@returns {boolean} `true` if it was changed.