src/vs/editor/contrib/zoneWidget/zoneWidget.ts/ZoneWidget/hide
class ZoneWidget:	hide(): void {
		if (this._viewZone) {
			this.editor.changeViewZones(accessor => {
				if (this._viewZone) {
					accessor.removeZone(this._viewZone.id);
				}
			});
			this._viewZone = null;
		}
		if (this._overlayWidget) {
			this.editor.removeOverlayWidget(this._overlayWidget);
			this._overlayWidget = null;
		}
		if (this._arrow) {
			this._arrow.hide();
		}
	}