meteor/docs/client/api-box.js

var apiData = function (longname) {
  var root = DocsData;

  _.each(longname.split("."), function (pathSegment) {
    root = root[pathSegment];
  });

  return root;
};

Template.autoApiBox.helpers({
  apiData: apiData,
  typeNames: function (nameList) {
    // change names if necessary
    nameList = _.map(nameList, function (name) {
      if (name === "function") {
        return "Function";
      } else if (name === "EJSONable") {
        return "EJSON-able object";
      }

      return name;
    });

    return nameList.join(" or ");
  },
  paramsSentence: function () {
    var params = this.params;

    var paramNames = _.map(params, function (param) {
      if (param.optional) {
        return "[" + param.name + "]";
      }

      return param.name;
    });

    return paramNames.join(", ");
  },
  name: function () {
    if (this.scope === "instance") {
      return "<em>" + apiData(this.memberof).instancename + "</em>." + this.name;
    }

    return this.longname;
  },
  link: function () {
    if (this.scope === "instance") {
      return apiData(this.memberof).instancename + "_" + this.name;
    }

    return this.longname.replace(".", "_").toLowerCase();
  },
  paramsNoOptions: function () {
    return _.reject(this.params, function (param) {
      return param.name === "options";
    });
  }
});