Create status bar icon menu in swift

menu.swift

let bar = NSStatusBar.system()
let length: CGFloat = -1 //NSVariableStatusItemLength
var item = bar.statusItem(withLength: length)        
item?.button?.image = NSImage(named: "MenuBarIcon-Normal")!
item?.button?.alternateImage = NSImage(named: "MenuBarIcon-Selected")!
        
let menu = NSMenu()
        
menu.addItem(NSMenuItem(title: "Blinkk \(appVersion)", action: nil, keyEquivalent: ""))
menu.addItem(NSMenuItem.separator())
        
let item1 = NSMenuItem(title: "Pause for 1h", action: #selector(self.handlePause1Button), keyEquivalent: "")
item1.target = self
menu.addItem(item1)
        
menu.addItem(NSMenuItem.separator())
        
let item3 = NSMenuItem(title: "Preferences...", action: #selector(self.handlePreferencesButton), keyEquivalent: "")
item3.target = self
menu.addItem(item3)
        
let item5 = NSMenuItem(title: "Quit", action: #selector(self.handleQuitButton), keyEquivalent: "")
item5.target = self
menu.addItem(item5)
        
item?.menu = menu