docs: function assembleOtherSeries(series) {
      return zrUtil.map(series, function (series) {
          var data = series.getRawData();
          var lines = [series.name];
          var vals = [];
          data.each(data.dimensions, function () {
              var argLen = arguments.length;
              var dataIndex = arguments[argLen - 1];
              var name = data.getName(dataIndex);
              for (var i = 0; i < argLen - 1; i++) {
                  vals[i] = arguments[i];
              }
              lines.push((name ? (name + ITEM_SPLITER) : '') + vals.join(ITEM_SPLITER));
          });
          return lines.join('\n');
      }).join('\n\n' + BLOCK_SPLITER + '\n\n');
  }