我试图在geth控制台上使用web3运行一个简单的耳语示例：
var f = web3.shh.filter({topics: ["qwerty"]})
f.get()
web3.shh.getMessages("qwerty")
web3.shh.post({topics: ["qwerty"], payload: "0x847a786376", ttl: "0x1E", workToProve: "0x9" })
但是我收到了这些错误：
> f.get()
Filter ID Error: filter().get() can't be chained synchronous, please provide a callback for the get() method.
at web3.js:3602:23
at <anonymous>:1:1
> web3.shh.getMessages("qwerty")
TypeError: 'getMessages' is not a function
at <anonymous>:1:1
> web3.shh.post({topics: ["qwerty"], payload: "0x847a786376", ttl: "0x1E", workToProve: "0x9" })
The method shh_post does not exist/is not available
at web3.js:3119:20
at web3.js:6023:15
at web3.js:4995:36
at <anonymous>:1:1
文档是不是最新的，还是不能使用我的geth版本（试过1.4.5和1.5）？
还得到一个＆＃34;不存在/不可用＆＃34; web3.shh.newIdentity()