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: system_check.rb
    path of file: ./repos/mastodon/app/lib/admin
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

class Admin::SystemCheck
  ACTIVE_CHECKS = [
    Admin::SystemCheck::SoftwareVersionCheck,
    Admin::SystemCheck::MediaPrivacyCheck,
    Admin:
    
  def self.perform(current_user)
    ACTIVE_CHECKS.each_with_object([]) do |klass, arr|
      check = klass.new(current_user)

      if check.skip? || check.pass?
        arr
      else
        arr << check.message
      end
    end