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: utility_fastlane.rb
    path of file: ./repos/eigen/fastlane
    
    the code of the file until where you have to start completion: # Utility functions

desc "Updates the version string in app.json"
lane :update_version_string do
  new_version = prompt(text: "What is the new human-readable release version?")
  $APP_JSO
    
def generate_app_store_connect_api_key
  app_store_connect_api_key(
    key_id: ENV['ARTSY_APP_STORE_CONNECT_API_KEY_ID'],
    issuer_id: ENV['ARTSY_APP_STORE_CONNECT_API_KEY_ISSUER_ID'],
    key_content: ENV['ARTSY_APP_STORE_CONNECT_API_KEY_CONTENT_BASE64'],
    is_key_content_base64: true,
    in_house: false,
  )
end