Ldap integration

For our project we currently have SAML set up to create users based on a single AD group.

We want any users belonging to a handful of AD groups to be added to various Appian business groups.

I decided to make a pm to add or remove group members, but don't have a way to query AD.

We cant seem to find a way to query AD aside from using LDAP(my understanding is SAML cant be used with LDAP). 

Is there  way to query AD with LDAP without fully committing to using LDAP in the Appian Admin console?

Something like an integration/webapi to query AD with LDAP without fully commiting to using LDAP from the admin console.

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