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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def keys_create(cls, fqdn, flag):
 """Create new key entry for a domain."""

        data = {
            "flags": flag,
        }
        meta = cls.get_fqdn_info(fqdn)
        url = meta['domain_keys_href']
        ret, headers = cls.json_post(url, data=json.dumps(data),
                                     return_header=True)
        return cls.json_get(headers['location'])