SystemInformationModel systemInformationModel = (SystemInformationModel) getChild(KnowledgeModel.SYSTEM_INFORMATION);
SystemInformationDisplay systemInformationModel = (SystemInformationDisplay) getChild(KnowledgeModel.SYSTEM_INFORMATION);
    public void finalizz() throws Exception {        SystemInformationModel systemInformationModel = (SystemInformationModel) getChild(KnowledgeModel.SYSTEM_INFORMATION);        removeChild(KnowledgeModel.SYSTEM_INFORMATION);        destroyChild(systemInformationModel);        super.finalizz();    }