code: function() {
        var m = this.__dbFilename.match(/(^.*)\/([^/]+)$/);
        var resDb;
        if (m && m.length == 3) {
          resDb = m[1] + "/resource-db.json";
        } else {
          resDb = "resource-db.json"; 
        }
        return resDb;
      }
docs: Returns the resource database filename
  @returns {null}