# File lib/twitter/base.rb, line 20
    def timeline(which=:friends, options={})
      raise UnknownTimeline unless [:friends, :public, :user].include?(which)
      auth = which.to_s.include?('public') ? false : true
      statuses(call("#{which}_timeline", :auth => auth, :since => options[:since], :args => parse_options(options)))
    end