# File lib/chef/cookbook/file_system_file_vendor.rb, line 43
      def get_filename(filename)
        location = @repo_paths.inject(nil) do |memo, basepath|
          candidate_location = File.join(basepath, @cookbook_name, filename)
          memo = candidate_location if File.exist?(candidate_location)
          memo
        end
        raise "File #{filename} does not exist for cookbook #{@cookbook_name}" unless location

        location
      end