Client SSL Certificate on Zebra TC 8000

Hi, I would like to programatically find client ssl certificate (I'm using it to authenticate api calls) installed via Settings -> Security -> Install from SD Card.
I tried to search in different keystores (AndroidCAStore, AndroidKeyStore, BCPKCS12, BKS, BouncyCastle, PKCS12), only AndroidCAStore returns certificates (but only CAs, no client certs).

I believe there is some way to get them, because built-in VPN client is able to list them.

Any help or guide would appreciated,

Adam Łamarz