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: handout.rb
    path of file: ./repos/Autolab/app/controllers/assessment
    
    the code of the file until where you have to start completion: require "archive"

##
# Defines handout method, so students can get handout
#
module AssessmentHandout
  def mime_type_from_ext(ext)
    case 
    
  def handout
    # If the logic here changes, do update assessment#has_handout?
    begin
      extend_config_module(@assessment, nil, @cud)
    rescue StandardError => e
      if @cud.has_auth_level? :instructor
        flash[:error] = "Error loading the config file: "
        flash[:error] += e.message
        flash[:error] += "<br/> Try reloading the course config file," \
          " or re-upload the course config file in order to recover your assessment."
        flash[:html_safe] = true
      else
        flash[:error] = "Error loading #{@assessment.display_name}. Please contact your instructor."
      end
      return
    end