src/vs/editor/contrib/zoneWidget/browser/zoneWidget.ts/ZoneWidget/create
class ZoneWidget:	create(): void {

		this.domNode.classList.add('zone-widget');
		if (this.options.className) {
			this.domNode.classList.add(this.options.className);
		}

		this.container = document.createElement('div');
		this.container.classList.add('zone-widget-container');
		this.domNode.appendChild(this.container);
		if (this.options.showArrow) {
			this._arrow = new Arrow(this.editor);
			this._disposables.add(this._arrow);
		}
		this._fillContainer(this.container);
		this._initSash();
		this._applyStyles();
	}