code: function readData(fp, options) {
    // shallow clone options
    var opts = utils.extend({}, options);
    // get the loader for this file.
    var ext = opts.lang || path.extname(fp);
    if (ext && ext.charAt(0) !== '.') {
      ext = '.' + ext;
    }
    if (!this.dataLoaders.hasOwnProperty(ext)) {
      return this.dataLoader('read')(fp, opts);
    }
    return this.dataLoader(ext)(fp, opts);
  }
docs: Utility for reading data files.
  
  @param {String} `fp` Filepath to read.
  @param {Object} `options` Options to pass to [js-yaml]
  @api private