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: filesystem.rb
    path of file: ./repos/stackneveroverflow/vendor/bundle/ruby/2.3.0/gems/sass-3.4.24/lib/sass/importers
    
    the code of the file until where you have to start completion: require 'set'

module Sass
  module Importers
    # The default importer, used for any strings found in the load path.
    # Simply loads Sass files from the filesystem using the default logic.
    class Filesystem < Base
      attr_accessor :root

      # Creates a new filesystem importer that imports files relative to a given path.
      #
      # @param root [String] The root path.
      #   This importer will import files relative to this path.
      def initialize(root)
    
    
      def _find(dir, name, options)
        full_filename, syntax = Sass::Util.destructure(find_real_file(dir, name, options))
        return unless full_filename && File.readable?(full_filename)

        # TODO: this preserves historical behavior, but it's possible
        # :filename should be either normalized to the native format
        # or consistently URI-format.
        full_filename = full_filename.tr("\\", "/") if Sass::Util.windows?

        options[:syntax] = syntax
        options[:filename] = full_filename
        options[:importer] = self
        Sass::Engine.new(File.read(full_filename), options)
      end