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: cloud-watch.rb
    path of file: ./repos/homebrew-core/Formula/c
    
    the code of the file until where you have to start completion: class CloudWatch < Formula
  desc "Amazon CloudWatch command-line Tool"
  homepage "https://aws.amazon.com/developertools/2534"
  url "https://ec2-downloads.s3.am
    
  def caveats
    <<~EOS
      Before you can use these tools you must export some variables to your $SHELL.
        export AWS_ACCESS_KEY="<Your AWS Access ID>"
        export AWS_SECRET_KEY="<Your AWS Secret Key>"
        export AWS_CREDENTIAL_FILE="<Path to the credentials file>"
    EOS
  end