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: preferable_class_methods.rb
    path of file: ./repos/spree/core/lib/spree/core/preferences
    
    the code of the file until where you have to start completion: module Spree::Preferences
  module PreferableClassMethods
    def preference(name, type, *args)
      options = args.extract_options!
      options.assert_valid_keys
    
    def preference(name, type, *args)
      options = args.extract_options!
      options.assert_valid_keys(:default, :deprecated)
      default = options[:default]
      default = -> { options[:default] } unless default.is_a?(Proc)
      deprecated = options[:deprecated]

      # cache_key will be nil for new objects, then if we check if there
      # is a pending preference before going to default
      define_method preference_getter_method(name) do
        preferences.fetch(name) do
          default.call
        end
      end

      define_method preference_setter_method(name) do |value|
        value = convert_preference_value(value, type)
        preferences[name] = value

        Spree::Deprecation.warn("`#{name}` is deprecated. #{deprecated}") if deprecated

        # If this is an activerecord object, we need to inform
        # ActiveRecord::Dirty that this value has changed, since this is an
        # in-place update to the preferences hash.
        preferences_will_change! if respond_to?(:preferences_will_change!)
      end

      define_method preference_default_getter_method(name), &default

      define_method preference_type_getter_method(name) do
        type
      end

      define_method preference_deprecated_getter_method(name) do
        deprecated
      end
    end