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: bundler.rb
    path of file: ./repos/rails_api_base/bin
    
    the code of the file until where you have to start completion: def invoked_as_script?
  File.expand_path($0) == File.expand_path(__FILE__)
end

def env_var_version
  ENV['BUNDLER_VERSION']
end

def cli_arg_version
  return unless invoked_as_script? # don't want to hijack other binstubs
  return unless "update".start_with?(ARGV.first || ' ') # must be running `bundle update`
  bundler_version = nil
  update_index = nil
  ARGV.each_with_index do |a, i|
    if update_index && update_index.succ == i && a =~ Gem::Version::ANCHORED_VERSION_PATTERN
      bundler_versio
    
def cli_arg_version
  return unless invoked_as_script? # don't want to hijack other binstubs
  return unless "update".start_with?(ARGV.first || ' ') # must be running `bundle update`
  bundler_version = nil
  update_index = nil
  ARGV.each_with_index do |a, i|
    if update_index && update_index.succ == i && a =~ Gem::Version::ANCHORED_VERSION_PATTERN
      bundler_version = a
    end
    next unless a =~ /\A--bundler(?:[= ](#{Gem::Version::VERSION_PATTERN}))?\z/
    bundler_version = $1 || '>= 0.a'
    update_index = i
  end
  bundler_version
end