def _load_public_keys(self, start_date, end_date):
        public_keys = self._public_key_provider.get_public_keys(
            start_date, end_date)
        if not public_keys:
            raise RuntimeError(
                'No public keys found between %s and %s' %
                (format_display_date(start_date),
                 format_display_date(end_date)))
        return public_keys
dataset/ETHPy150Open aws/aws-cli/awscli/customizations/cloudtrail/validation.py/DigestTraverser._load_public_keys/original