code: def SetCACertificatesPath(self, ca_certificates_path):
      
      if not ca_certificates_path:
        return
  
      if not os.path.exists(ca_certificates_path):
        raise errors.BadConfigOption(
            'No such certificate file: {0:s}.'.format(ca_certificates_path))
  
      self._ca_certs = ca_certificates_path
      logger.debug('Elasticsearch ca_certs: {0!s}'.format(ca_certificates_path))
docs: Sets the path to the CA certificates.
  
      Args:
        ca_certificates_path (str): path to file containing a list of root
          certificates to trust.
  
      Raises:
        BadConfigOption: if the CA certificates file does not exist.