final String messageTemplate = "Two composites A and B, both without mainimpl, B depends on instances inside A, but A is marked as '<export instance='false' />'. %s";
CompositeType cta = (CompositeType) waitForImplByName(null,
"composite-a-local-instance-nomain");
Composite composite_a = (Composite) cta.createInstance(null, null);
Implementation groupAImpl = waitForImplByName(null, "group-a");
Implementation groupBImpl = waitForImplByName(null, "group-b");
Instance groupAInstance = groupAImpl.createInstance(composite_a,