public function credentials($domain, $limit = 100, $skip = 0)
{
Assert::stringNotEmpty($domain);
Assert::integer($limit);
Assert::integer($skip);
$params = ['limit' => $limit, 'skip' => $skip];
$response = $this->httpGet(sprintf('/v3/domains/%s/credentials', $domain), $params);
return $this->safeDeserialize($response, CredentialResponse::class);
}