code: function (req, res, dataPath) {
      var body = req.body;
      var data = body.data;
      var dataUnflatten = body.unflatten;
  
      if (dataUnflatten) {
          data = unflatten(data, { delimiter: '/', overwrite: 'root' });
      }
  
      htmlTree.writeDataFile(data, true, dataPath, function(err, finalData){
          if (err || !finalData) {
              res.status(config.statusCodes.error).json({
                  message: err
              });
          } else {
              res.status(config.statusCodes.OK).json(finalData);
          }
      });
  }
docs: postHTML REST api processor
  
  @param {Object} req - express request
  @param {Object} req.body.data - data to write
  @param {Boolean} req.body.unflatten - set true, to unflat tree from 'base/spec'
  
  @param {Object} res - express response
  @param {String} dataPath - custom data storage path
  
  Writes result to res object