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: webrick-utils.rb
    path of file: ./repos/chef/lib/chef/monkey_patches
    
    the code of the file until where you have to start completion: require "webrick/utils"

module WEBrick
  module Utils
    ##
    # Creates TCP server sockets bound to +address+:+port+ and returns them.
    #
    # It will create IPV4 and IPV6 sockets on all interfaces.
    #
    # NOTE: We need to monkey patch this method because
    # create_listeners on Windows with Ruby > 2.0.0 does not
    # raise an err
    
    def create_listeners(address, port, logger = nil)
      #
      # utils.rb -- Miscellaneous utilities
      #
      # Author: IPR -- Internet Programming with Ruby -- writers
      # Copyright 2001-2016, TAKAHASHI Masayoshi, GOTOU Yuuzou
      # Copyright 2002-2016, Internet Programming with Ruby writers. All rights
      # reserved.
      #
      # $IPR: utils.rb,v 1.10 2003/02/16 22:22:54 gotoyuzo Exp $
      unless port
        raise ArgumentError, "must specify port"
      end