@UiChild(tagname = "emptyTableWidget", limit = 1)
    public void setEmptyTableWidget(Widget widget) {
        this.emptyTableWidget = widget;
    }
Set the widget to display when the table has no rows.

@param widget the empty table widget, or null to disable
stroom-core-client-widget/src/main/java/com/google/gwt/user/cellview/client/AbstractCellTable.java