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: core_workflow.rb
    path of file: ./repos/zammad/app/models/form_updater
    
    the code of the file until where you have to start completion: # Copyright (C) 2012-2024 Zammad Foundation, https://zammad-foundation.org/

class FormUpdater::CoreWorkflow
  include ::Mixin::HasBackends

  def self.perform_mapping(perform_result, result, relation_fields:)
    initialize_fields(perform_resu
    
  def self.perform_mapping(perform_result, result, relation_fields:)
    initialize_fields(perform_result, result)

    backends.each do |backend|
      backend.perform(
        perform_result:  perform_result,
        result:          result,
        relation_fields: relation_fields
      )
    end
  end