Schema validator (javax.xml.validation.Validator) works wrong in some cases:

1. Donwload and start NetBeans (http://deadlock.netbeans.org/hudson/job/sierra)
2. Open attach project
3. Open SynchronousSample.bpel
4. Switch to source view
5. Start Validation (Alt+Shift+F9) button
6. Validator points to the wrong "empty" activity, instead of "If"
   (returns line and column number of the component).

Root issue is http://www.netbeans.org/issues/show_bug.cgi?id=137885
new links to NetBeans builds:
http://beryl.russia.sun.com:8080/hudson/job/sierra or
http://beryl.russia.sun.com:8080/hudson/job/gfesbv22