<script>
let bike = {
   name: 'SuperSport', 
   maker:'Ducati', 
   start: function() {
       document.write('<b>Starting the engine...');
   }
};
bike.start();   //Output: Starting the engine...
/* Adding method stop() later to the object */
bike.stop = function() {
    document.write('<b><br>Applying Brake...');  
}
bike.stop();    //Output: Applying Brake...
</script>