code: def _cert_data_to_pem_objects(cert_data):
      
      pem_objects = []
      for key in ['privkey', 'cert', 'chain']:
          pem_objects.extend(pem.parse(cert_data[key].encode('utf-8')))
  
      return pem_objects
docs: Given a non-None response from the Vault key/value store, convert the
      key/values into a list of PEM objects.