StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
org.kie.runtime.rule.FactHandle f1 = ksession.insert( "f1" );
SessionEntryPoint ep = ksession.getWorkingMemoryEntryPoint( "xxx" );
try {
ep.update( f1, "s1" );
fail( "Should throw an exception" );
} catch ( IllegalArgumentException e ) {
}