src/vs/base/browser/fastDomNode.ts/FastDomNode/setBoxShadow
class FastDomNode:	public setBoxShadow(boxShadow: string): void {
		if (this._boxShadow === boxShadow) {
			return;
		}
		this._boxShadow = boxShadow;
		this.domNode.style.boxShadow = boxShadow;
	}