LDAP profile for non HTTP protocols

Actually I've discovered that also in bigip.conf on my LDAP auth profile I have credential-source http-basic-auth, it's just not shown in the GUI:

 

 

ltm auth profile /Common/MYldap {

 

app-service none

 

configuration /Common/myLDAPauth

 

credential-source http-basic-auth

 

defaults-from /Common/ldap

 

type ldap

 

}

 

 

Can I change it from http-basic-auth to iRule_will_supply_data kind of source? I couldn't find any relevant docs on this anywhere..