Ios swift 3.0中不推荐使用XMPP语法

我的问题是这里的“body.setStringValue（“Message”）”在swift 3.0中不可用，传递消息是否有其他语法

func xmppStreamDidAuthenticate(sender: XMPPStream!){

let body = DDXMLElement.elementWithName("body") as! DDXMLElement
let messageID = sender.generateUUID()

body.setStringValue("Message")

let completeMessage = DDXMLElement.elementWithName("message") as! DDXMLElement

completeMessage.addAttributeWithName("id", stringValue: messageID)
completeMessage.addAttributeWithName("type", stringValue: "chat")
completeMessage.addAttributeWithName("to", stringValue: "anotheruser@localhost")
completeMessage.addChild(body)

let active = DDXMLElement.elementWithName("active", stringValue: 
  "http://jabber.org/protocol/chatstates") as! DDXMLElement
completeMessage.addChild(active)
sender.sendElement(completeMessage)}

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在swift 3.0中，使用以下代码：

let receiverJID = XMPPJID(string:"anotheruser@localhost")
let msg = XMPPMessage(type: "chat", to: receiverJID, elementID:"message1")   
msg?.addBody("Hi there!")
stream.send(msg) // Here stream is the XMPPStream

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在这里我得到了这个问题的解决方案，我们可以像“body.stringValue=”Hello Message！“在swift版本中

let receiverJID = XMPPJID(string:"anotheruser@localhost")
let msg = XMPPMessage(type: "chat", to: receiverJID, elementID:"message1")   
msg?.addBody("Hi there!")
stream.send(msg) // Here stream is the XMPPStream