src/vs/workbench/services/keybinding/browser/keybindingService.ts/WorkbenchKeybindingService/bindToCurrentPlatform
class WorkbenchKeybindingService:	private static bindToCurrentPlatform(key: string | undefined, mac: string | undefined, linux: string | undefined, win: string | undefined): string | undefined {
		if (OS === OperatingSystem.Windows && win) {
			if (win) {
				return win;
			}
		} else if (OS === OperatingSystem.Macintosh) {
			if (mac) {
				return mac;
			}
		} else {
			if (linux) {
				return linux;
			}
		}
		return key;
	}