private void removeParentModelInGroupBySource(ContextTableTabParentModel parentModel) {
   Set<String> paraNames = new HashSet<String>();
   String sourceId = parentModel.getSourceId();
   if (IContextParameter.BUILT_IN.equals(sourceId)) {
     String paraName = parentModel.getContextParameter().getName();
     paraNames.add(paraName);
   } else {
     List<ContextTabChildModel> children = parentModel.getChildren();
     if (children != null && children.size() > 0) {
       for (ContextTabChildModel child : children) {
         IContextParameter contextPara = child.getContextParameter();
         String paraName = contextPara.getName();
         paraNames.add(paraName);
       }
     }
   }
   modelManager.onContextRemoveParameter(getContextManager(), paraNames, sourceId);
 }
 private void removeChildModelInGroupBySource(ContextTableTabChildModel child) {
   IContextParameter contextPara = child.getContextParameter();
   String sourceId = contextPara.getSource();
   String contextName = contextPara.getName();
   modelManager.onContextRemoveParameter(getContextManager(), contextName, sourceId);
 }