private void identifyDuplicateGroupNames(final Collection<Group> groups){
  LOG.debug("identifyDuplicateGroupNames");
  final List<String> groupNames=new ArrayList<String>();
  for (  final Group group : groups) {
    if (groupNames.contains(group.getName())) {
      throw new WroRuntimeException("Duplicate group name detected: " + group.getName());
    }
    groupNames.add(group.getName());
  }
}

private void identifyDuplicateGroupNames ( final Collection < Group > groups ) { LOG . debug ( "identifyDuplicateGroupNames" ) ; final List < String > groupNames = new ArrayList < String > ( ) ; for ( final Group group : groups ) { if ( groupNames . contains ( group . getName ( ) ) ) { throw new WroRuntimeException ( "Duplicate group name detected: " + group . getName ( ) ) ; } groupNames . add ( group . getName ( ) ) ; } }
identify duplicate group names .
