code: def advice_dcv_method(cls, csr, package, altnames, dcv_method,
                            cert_id=None):
          
          params = {'csr': csr, 'package': package, 'dcv_method': dcv_method}
          if cert_id:
              params['cert_id'] = cert_id
          result = cls.call('cert.get_dcv_params', params)
          if dcv_method == 'dns':
              cls.echo('You have to add these records in your domain zone :')
          cls.echo('\n'.join(result['message']))
docs: Display dcv_method information.