if let hello = CFileWrapper.read("HelloWorld.txt") {
  print(hello)
}

CFileWrapper.read("HelloWorld.txt") { text in
	guard let text = text else {
		print("Unable to read file")
		return
	}
	print(text)
}

class MyClass: CFileWrapperDelegate {
  func CFileWrapper(read line: String) {
    print(line)
  }
}

let myClass = MyClass()
CFileWrapper.readw("HelloWorld.txt", delegate: myClass)