/**
  * Creates a tab instance
  *
  * @param group
  */
 public GroupExtSourcesTabItem(Group group) {
   this.group = group;
   this.groupId = group.getId();
   this.voId = group.getVoId();
 }
 /**
  * Creates a tab instance
  *
  * @param group
  */
 public GroupSettingsTabItem(Group group) {
   this.group = group;
   this.groupId = group.getId();
 }