@Override
    public void dispose() {
        this.listModel = null;
        this.previewList = null;
        this.lblPreviewLabel = null;
        this.lblBaseInfoLabel = null;
        this.btnApplyButton = null;
        this.btnEditButton = null;
        this.btnDeleteButton = null;
        this.list = null;
        this.listPanel = null;
        this.btnRefreshListButton = null;
        this.previewPanel = null;
        this.lblWarningLabel = null;
        this.btnNewButton = null;

        if (this.menubar != null) {
            this.menubar.shutdown();
        }
        this.menubar = null;

        super.dispose();
    }