You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: mirror.rb
    path of file: ./repos/truffleruby/lib/mri/bundler
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

require "socket"

module Bundler
  class Settings
    # Class used to build the mirror set and then find a mirror for a given URI
    #
    # @param prober [Prober object, nil] by default a TCPSocketPro
    
      def initialize(config_line, value)
        uri, fallback =
          config_line.match(%r{\Amirror\.(all|.+?)(\.fallback_timeout)?\/?\z}).captures
        @fallback = !fallback.nil?
        @all = false
        if uri == "all"
          @all = true
        else
          @uri = Bundler::URI(uri).absolute? ? Settings.normalize_uri(uri) : uri
        end