Need to get parent_domain via API

Hello, I need to get parent domain for addon domain using cPanel/WHM API. For example, I created an addon domain: sometestaddondomain.com and a subdomain for it: subforaddon.sometestaddondomain.com If I call whmapi1 get_domain_info, I will get domain: subforaddon.sometestaddondomain.com parent_domain: account1.com
But I expect that parent_domain is sometestaddondomain.com, because I will use it to recreate subdomain via uapi in case the subdomain was removed. On the other hand, I can get correct info from old API. cpapi2 --user=account1 SubDomain listsubdomains domain: subforaddon.sometestaddondomain.com rootdomain: sometestaddondomain.com
But it might be not an option in case of space quota is reached for the account. UAPI DomainInfo domains_data does not provide any info regarding parent domain. Can you please give an advice how I should retrieve this info? Thanks.