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: finder.rb
    path of file: ./repos/stubb/lib/stubb
    
    the code of the file until where you have to start completion: module Stubb

  class NotFound < Exception; end

  class Finder

    attr_accessor :request, :root

    def initialize(options = {})
      @root = File.expand_path options[:root] || ''
      @verbose = options[:verbose] || false
    end

    def call(env)
      @request = Request.new env

      respond

    resc
    
    def respond
      response_file_path = projected_path
      response_body = File.open(response_file_path, 'r')  {|f| f.read }
      Response.new(
        response_body,
        request.params,
        200,
        {'Content-Type' => content_type, 'X-Stubb-Response-File' => response_file_path}
      ).finish
    rescue NotFound => e
      debug e.message
      [404, {}, [e.message]]
    end