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: lobster.rb
    path of file: ./repos/truffleruby/bench/sinatra/bundle/gems/rack-2.2.3/lib/rack
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

require 'zlib'

module Rack
  # Paste has a Pony, Rack has a Lobster!
  class Lobster
    LobsterString = Zlib::Inflate.inflate("eJx9kEEOwyAMBO99xd7MAcytUhPlJyj2
    P6jy9i4k9EQyGAnBarEXeCBqSkntNXsi/ZCvC48zGQoZKikGrFMZvgS5ZHd+aGWVuWwhVF0
    t1drVmiR42HcWNz5w3QanT+2gIvTVCiE1lm1Y0eU4JGmIIbaKwextKn8rvW+p5PIwFl8ZWJ
    I8jyiTlhTcYXkekJAzTyYN6E08A+dk8voBkAVTJQ==".delete("\n ").unpack("m*")[0])

    LambdaLobster = lambda { |env|
      if env[QUERY_STRING].include?("flip")
        lobster = LobsterString.split("\n").
          map { |line| line.ljust(42).reverse }.
 
    
    def call(env)
      req = Request.new(env)
      if req.GET["flip"] == "left"
        lobster = LobsterString.split("\n").map do |line|
          line.ljust(42).reverse.
            gsub('\\', 'TEMP').
            gsub('/', '\\').
            gsub('TEMP', '/').
            gsub('{', '}').
            gsub('(', ')')
        end.join("\n")
        href = "?flip=right"
      elsif req.GET["flip"] == "crash"
        raise "Lobster crashed"
      else
        lobster = LobsterString
        href = "?flip=left"
      end

      res = Response.new
      res.write "<title>Lobstericious!</title>"
      res.write "<pre>"
      res.write lobster
      res.write "</pre>"
      res.write "<p><a href='#{href}'>flip!</a></p>"
      res.write "<p><a href='?flip=crash'>crash!</a></p>"
      res.finish
    end