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

require 'rails_helper'

RSpec.describe SecureMailing::PGP, :aggregate_failures do
  before do
    Setting.
    
  def build_mail
    Channel::EmailBuild.build(
      from:         sender_email_address,
      to:           recipient_email_address,
      cc:           cc_recipient_email_address,
      body:         raw_body,
      content_type: content_type,
      security:     security_preferences,
      attachments:  attachments
    )
  end