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: anonymizer.rb
    path of file: ./repos/evil-seed/lib/evil_seed
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

module EvilSeed
  # This class constructs customizer callable with simple DSL:
  #
    
    def call(attributes)
      attributes.deep_dup.tap do |attrs|
        @changers.each do |attribute, changer|
          attrs[attribute] = changer.call(attrs[attribute])
        end
      end
    end