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: aix.rb
    path of file: ./repos/chef/lib/chef/provider/cron
    
    the code of the file until where you have to start completion: #
# Author:: Kaustubh Deorukhkar (<kaustubh@clogeny.com>)
# Copyright:: Copyright (c) Chef Software Inc.
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org
    
        def get_crontab_entry
          if env_vars_are_set?
            raise Chef::Exceptions::Cron, "Aix cron entry does not support environment variables. Please set them in script and use script in cron."
          end

          if time_out_set?
            raise Chef::Exceptions::Cron, "Aix cron entry does not support timeout."
          end

          newcron = "# Chef Name: #{new_resource.name}\n"
          newcron << "#{@new_resource.minute} #{@new_resource.hour} #{@new_resource.day} #{@new_resource.month} #{@new_resource.weekday}"

          newcron << " #{@new_resource.command}\n"
          newcron
        end