docs: function(annotation) {
  			if (!annotation) { return; }
  			var index = this._getAnnotationIndex(annotation);
  			if (index < 0) { return; }
  			var e = {
  				type: "Changed", //$NON-NLS-0$
  				added: [],
  				removed: [],
  				changed: [annotation]
  			};
  			this.onChanged(e);
  		}