src/vs/editor/contrib/find/browser/findWidget.ts/FindWidget/_removeViewZone
class FindWidget:	private _removeViewZone() {
		this._codeEditor.changeViewZones((accessor) => {
			if (this._viewZoneId !== undefined) {
				accessor.removeZone(this._viewZoneId);
				this._viewZoneId = undefined;
				if (this._viewZone) {
					this._codeEditor.setScrollTop(this._codeEditor.getScrollTop() - this._viewZone.heightInPx);
					this._viewZone = undefined;
				}
			}
		});
	}