public static Collection getOrgActivities(PlanServiceContext psc) { return getOrgActivities(psc, (Collection) null);
public static Collection getOrgActivities(PlanServiceContext psc, String orgID) { return getOrgActivities(psc, Collections.singleton(orgID));
  public static Collection getOrgActivities(PlanServiceContext psc) {    return getOrgActivities(psc, (Collection) null);  }