code: function() {
  			if (this.modeApplier) {
  				this.modeApplier.removeEventListener("Highlight", this.listener.onHighlight);
  				this.modeApplier.destroy();
  			}
  			if (this.annotationModel) {
  				// remove annotation listeners
  			}
  			if (this.textView) {
  				this.textView.removeEventListener("LineStyle", this.listener.onLineStyle);
  				this.textView.removeEventListener("Destroy", this.listener.onDestroy);
  			}
  			this.textView = null;
  			this.annotationModel = null;
  			this.modeApplier = null;
  			this.listener = null;
  		}
docs: Deactivates this styler and removes its listeners.