Property Mapping for additinal emails

[ZEROX7]

Would Love the abiltiy to map my additinal emails to be auto filled trough openid login.
Scope Output:
{
"email": "FullName@domain.net",
"email_verified": true,
"additional_mail": "SOMENAME@gmail.com",
"aliases": [
"name@domain.email",
"username@domain.email"
]
}
since i dont see any property mapping for additional mail i belive its not implemented yet?