class Net::SSH::Prompt


end
prompter.sucess if ok
ok = send(user, password)
password = prompter.ask(“password: ”, false)
user = prompter.ask(“user: ”, true)
while !ok && max_retries < 3
prompter = options.start({type:‘password’})
ask and success. Net::SSH uses it like:
object should implemnted a start method, which should return something implementing
A custom prompt objects can implement caching, or different UI. The prompt
you automatically.
It will never be instantiated directly, but will instead be created for
Default prompt implementation, called for asking password from user.

def self.default(options = {})

factory 
def self.default(options = {})
  @default ||= new(options)
end

def initialize(options = {}); end 

def initialize(options = {}); end

def start(info)

session, so caching implementations can save passwords properly.
on the returned object. Info hash tries to uniquely identify the password
start password session. Multiple questions might be asked multiple times 
def start(info)
  Prompter.new(info)
end