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: validator.rb
    path of file: ./repos/artichoke/artichoke-backend/vendor/ruby/lib/bundler/settings
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

module Bundler
  class Settings
    class Validator
      class Rule
        attr_reader :description

        def initialize(keys, description, &validate)
          @keys = keys
          @description = description
          
    
        def set(settings, key, value, *reasons)
          hash_key = k(key)
          return if settings[hash_key] == value
          reasons.unshift @description
          Bundler.ui.info "Setting `#{key}` to #{value.inspect}, since #{reasons.join(", ")}"
          if value.nil?
            settings.delete(hash_key)
          else
            settings[hash_key] = value
          end