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: kube-ps1.rb
    path of file: ./repos/homebrew-core/Formula/k
    
    the code of the file until where you have to start completion: class KubePs1 < Formula
  desc "Kubernetes prompt info for bash and zsh"
  homepage "https://gith
    
  def caveats
    <<~EOS
      Make sure kube-ps1 is loaded from your ~/.zshrc and/or ~/.bashrc:
        source "#{opt_share}/kube-ps1.sh"
        PS1='$(kube_ps1)'$PS1
    EOS
  end