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: resolv-replace.rb
    path of file: ./repos/truffleruby/lib/mri
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

require 'socket'
require 'resolv'

class << IPSo
    
  def send(mesg, flags, *rest)
    if rest.length == 2
      host, port = rest
      begin
        addrs = Resolv.getaddresses(host)
      rescue Resolv::ResolvError
        raise SocketError, "Hostname not known: #{host}"
      end