updateMfaLevel method
Update a guild's MFA level.
Implementation
Future<MfaLevel> updateMfaLevel(Snowflake id, MfaLevel level, {String? auditLogReason}) async {
final route = HttpRoute()
..guilds(id: id.toString())
..mfa();
final request = BasicRequest(
route,
method: 'POST',
auditLogReason: auditLogReason,
body: jsonEncode({'level': level.value}),
);
final response = await client.httpHandler.executeSafe(request);
return MfaLevel.parse((response.jsonBody as Map<String, Object?>)['level'] as int);
}