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: annotate.rb
    path of file: ./repos/annotate_models/lib
    
    the code of the file until where you have to start completion: $LOAD_PATH.unshift(File.dirname(__FILE__))
require 'annotate/version'
require 'annotate/annotate_models'
require 'annotate/annotate_routes'
require 'annotate/constants'
require 'annotate/helpers'

begin
  # ActiveSupport 3.x...
  require 'active_support/hash_with_indifferent_access'
  require 'active_support/core_ext/object/blank'
rescue StandardError
  # ActiveSupport 2.x...
  require 'active_support/core
    
  def self.setup_options(options = {})
    Constants::POSITION_OPTIONS.each do |key|
      options[key] = Annotate::Helpers.fallback(ENV[key.to_s], ENV['position'], 'before')
    end
    Constants::FLAG_OPTIONS.each do |key|
      options[key] = Annotate::Helpers.true?(ENV[key.to_s])
    end
    Constants::OTHER_OPTIONS.each do |key|
      options[key] = !ENV[key.to_s].blank? ? ENV[key.to_s] : nil
    end
    Constants::PATH_OPTIONS.each do |key|
      options[key] = !ENV[key.to_s].blank? ? ENV[key.to_s].split(',') : []
    end

    options[:additional_file_patterns] ||= []
    options[:additional_file_patterns] = options[:additional_file_patterns].split(',') if options[:additional_file_patterns].is_a?(String)
    options[:model_dir] = ['app/models'] if options[:model_dir].empty?

    options[:wrapper_open] ||= options[:wrapper]
    options[:wrapper_close] ||= options[:wrapper]

    # These were added in 2.7.0 but so this is to revert to old behavior by default
    options[:exclude_scaffolds] = Annotate::Helpers.true?(ENV.fetch('exclude_scaffolds', 'true'))
    options[:exclude_controllers] = Annotate::Helpers.true?(ENV.fetch('exclude_controllers', 'true'))
    options[:exclude_helpers] = Annotate::Helpers.true?(ENV.fetch('exclude_helpers', 'true'))

    options
  end