code: function bindCallbacks( o, callbacks, args ) {
  		var prop = QUnit.objectType( o );
  		if ( prop ) {
  			if ( QUnit.objectType( callbacks[ prop ] ) === "function" ) {
  				return callbacks[ prop ].apply( callbacks, args );
  			} else {
  				return callbacks[ prop ]; // or undefined
  			}
  		}
  	}
docs: Call the o related callback with the given arguments.