If FLATTEN_GROUPS is present and equals 0, the portal is version 5.0 and the group hierarchies will not be flattened.
In version 4.5WS, the portal expected the sync provider to flatten any group hierarchies, returning only a list of users 1-N levels below the specified group. In version 5.0, the call to GetMembers
returns the immediate children, both groups and users.
AuthConstants Class | Plumtree.Remote.Auth Namespace