src/vs/platform/keybinding/common/usLayoutResolvedKeybinding.ts/USLayoutResolvedKeybinding/_keyCodeToUILabel
class USLayoutResolvedKeybinding:	private _keyCodeToUILabel(keyCode: KeyCode): string {
		if (this._os === OperatingSystem.Macintosh) {
			switch (keyCode) {
				case KeyCode.LeftArrow:
					return '←';
				case KeyCode.UpArrow:
					return '↑';
				case KeyCode.RightArrow:
					return '→';
				case KeyCode.DownArrow:
					return '↓';
			}
		}
		return KeyCodeUtils.toString(keyCode);
	}