class ChefCLI::Policyfile::StorageConfig

def use_policyfile(policyfile_filename)
  if policyfile_filename.end_with?(".lock.json")
    return use_policyfile_lock(policyfile_filename)
  end
  unless policyfile_filename.end_with?(".rb")
    raise InvalidPolicyfileFilename, "Policyfile filenames must end with `.rb' extension (you gave: `#{policyfile_filename}')"
  end
  @policyfile_filename = policyfile_filename
  @policyfile_lock_filename = policyfile_filename.sub(/\.rb\Z/, ".lock.json")
  @relative_paths_root = File.dirname(policyfile_filename)
  self
end