docs: function(config, level, floor, callback) {
      var floors = [];
      var fromIdentifier = level ? level.identifier : null;    
      var options = FloorSelectionOptions.createFromIdentifiers(fromIdentifier, floor);
               
      try{
          floors = FloorController.getFloors(config.floorsDir, options);
          return callback(null, floors, options); 
      } catch(error) {
          return callback(error);
      }
  }