var MyNamedThing = Class.create({
    initialize: function(name) {
        // The 'name' parameter is a private variable, no one can see it from the outside
        // Here's another private variable:
        var description;

        // 'description' is the same as 'name' unless the caller sets one explicitly
        // We do a fairly silly implementation of that to make the point about private vars and accessors
        description = name;

        // Public accessors for 'name'
        this.getName = function() {
            return name;
        };
        this.setName = function(newname) {
            if (!newname) {
                throw "Invalid name";
            }
            if (description == name) {
                description = newname;
            }
            name = newname;
        };

        // Public accessors for 'description'
        this.getDescription = function() {
            return description;
        };
        this.setDescription = function(newdesc) {
            if (!newdesc) {
                throw "Invalid description";
            }
            description = newdesc;
        };
    }
});