gistfile1.js

Y.MyWidget = Y.Base.create(NAME, Y.Widget, [], {
  initializer: function() {
    this._node = null;
  },

  activate: function(ct) {
    // ... 
    this._node = ct;
    // ... 
  },

  _nodeSetter: function() {},

  _nodeGetter: function() {
    return this._node;
  }

}, {
  ATTRS: {
    'node': {
      setter: '_nodeSetter',
      getter: '_nodeGetter'
    }
  }
});