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: fail_slow.rb
    path of file: ./repos/kitchen-terraform/lib/kitchen/terraform/systems_verifier
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

# Copyright 2016-2021 Copado NCS LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file
    
        def verify(outputs:, variables:)
          systems.each do |system|
            verify_and_continue outputs: outputs, system: system, variables: variables
          end

          raise ::Kitchen::TransientFailure, messages.join("\n\n") if !messages.empty?

          self
        end