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: rack_http.rb
    path of file: ./repos/lamby/lib/lamby
    
    the code of the file until where you have to start completion: module Lamby
  class RackHttp < Lamby::Rack

    class << self

      def handle?(event)
        event.key?('version') && 
          ( event.dig('requestContext', 'http') || 
            event.dig('requestContext', 'httpMethod') )
      end

    end

    def response(handler)
      if handler.base64_encodeable?
        { isBase64Encoded: true, body: handler.body64 }
      else
        super
      end.tap do |r|
        if cookies = handler.set_cookies
          if payload_version_one?
            r[:multiValueHe
    
    def env_base
      { ::Rack::REQUEST_METHOD => request_method,
        ::Rack::SCRIPT_NAME => '',
        ::Rack::PATH_INFO => path_info,
        ::Rack::QUERY_STRING => query_string,
        ::Rack::SERVER_NAME => server_name,
        ::Rack::SERVER_PORT => server_port,
        ::Rack::SERVER_PROTOCOL => server_protocol,
        ::Rack::RACK_VERSION => ::Rack::VERSION,
        ::Rack::RACK_URL_SCHEME => 'https',
        ::Rack::RACK_INPUT => StringIO.new(body || ''),
        ::Rack::RACK_ERRORS => $stderr,
        ::Rack::RACK_MULTITHREAD => false,
        ::Rack::RACK_MULTIPROCESS => false,
        ::Rack::RACK_RUNONCE => false,
        LAMBDA_EVENT => event,
        LAMBDA_CONTEXT => context
      }.tap do |env|
        ct = content_type
        cl = content_length
        env['CONTENT_TYPE'] = ct if ct
        env['CONTENT_LENGTH'] = cl if cl
      end
    end