private boolean isTargetGroup(final Group group){
  notNull(group);
  final String targetGroups=getTargetGroups();
  return targetGroups == null || targetGroups.contains(group.getName());
}

private boolean isTargetGroup ( final Group group ) { notNull ( group ) ; final String targetGroups = getTargetGroups ( ) ; return targetGroups == null || targetGroups . contains ( group . getName ( ) ) ; }
check if the provided group is a target group .
