is it possible to add method in existing photoshop object model?if yes then pls tell how to add?pls

Some examples...

var ArtLayer = function () {}
ArtLayer.prototype.showOpacity = function() {
    alert(this.opacity);
};

File.prototype.readByte = function() {//aka unsigned byte
   return this.read(1).charCodeAt(0);
};

String.prototype.trim = function() {
  return this.replace(/^[\s]+|[\s]+$/g, '');
};

Math.__proto__.randomFromTo = function(from, to){
           return Math.floor(Math.random() * (to - from + 1) + from);
};