The client portable interceptor points are not called for Object pseudo ops such as is_a, non_existent, etc.

Interceptor points must be invoked for all orb-mediated calls (which includes Object pseudo-ops).

OTS 1.2 transaction semantics requires that all invocations made within an active transaction bracket be part of the transaction. Thus interception points must be called for all orb-mediated calls within an active transaction bracket.