text: function LightV2() {
      
      var brightnessLevel = 0;
  
      this.execute = function(action) {
          
          if(action === 'OFF') {
              brightnessLevel = brightnessLevel > 0 ? brightnessLevel - 1: 0;
          } else if(action === 'ON'){
              ++brightnessLevel;
          } else if(action === 'TOGGLE') {
              brightnessLevel += 2;
          }
  
      };
  
      this.getBrightnessLevel = function() {
          return brightnessLevel;
      };
  }