src/vs/platform/keybinding/common/usLayoutResolvedKeybinding.ts/USLayoutResolvedKeybinding/_getUserSettingsLabel
class USLayoutResolvedKeybinding:	protected _getUserSettingsLabel(keybinding: SimpleKeybinding): string | null {
		if (keybinding.isDuplicateModifierCase()) {
			return '';
		}
		const result = KeyCodeUtils.toUserSettingsUS(keybinding.keyCode);
		return (result ? result.toLowerCase() : result);
	}