final Collection<ParsedOperationRequestHeader> headers = handler.getHeaders();
assertEquals(1, headers.size());
final ParsedOperationRequestHeader header = headers.iterator().next();
assertTrue(header instanceof ParsedRolloutPlanHeader);
final ParsedRolloutPlanHeader rollout = (ParsedRolloutPlanHeader) header;
assertNull(rollout.getPlanRef());
assertFalse(rollout.hasProperties());
assertNull(rollout.getLastGroup());
assertTrue(rollout.endsOnPlanIdValueSeparator());
assertEquals(15, rollout.getLastSeparatorIndex());
}