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: solaris.rb
    path of file: ./repos/puppet/lib/puppet/util/at_fork
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

require_relative '../../../puppet'
require 'fiddle'

# Early versions of Fiddle 
    
  def abandon_latest_child_contract
    ctid = get_latest_child_contract_id
    return if ctid.nil?

    begin
      ctl = File.new(File.join(CTFS_PR_ROOT, ctid.to_s, 'ctl'), File::WRONLY)

      begin
        raise_if_error { ct_ctl_abandon(ctl.fileno) }
      ensure
        ctl.close
      end