class ChefConfig::WorkstationConfigLoader

def find_default_key(key_names)
  key_names.each do |filename|
    path = Pathname.new(filename)
    # If we have a config location (like ./.chef/), look there first.
    if config_location
      local_path = path.expand_path(File.dirname(config_location))
      return local_path.to_s if local_path.exist?
    end
    # Then check ~/.chef.
    home_path = path.expand_path(home_chef_dir)
    return home_path.to_s if home_path.exist?
  end
  nil
end