class SearchReplace implements GeneralActionsManipulator {

    @Override
    public void execute() {
        SearchReplaceUI ui = Lookup.getDefault().lookup(SearchReplaceUI.class);
        if (ui.isActive()) {
            return;//Do not open more than one Search/Replace dialog
        }
        if (Lookup.getDefault().lookup(DataTablesController.class).isNodeTableMode()) {
            ui.setMode(SearchReplaceUI.Mode.NODES_TABLE);
        } else {
            ui.setMode(SearchReplaceUI.Mode.EDGES_TABLE);
        }
        DialogDescriptor dd = new DialogDescriptor(ui, getName());
        dd.setModal(true);
        dd.setOptions(new Object[] {NbBundle.getMessage(SearchReplace.class, "SearchReplace.window.close")});
        ui.setActive(true);
        DialogDisplayer.getDefault().notify(dd);
        ui.setActive(false);
    }

    @Override
    public String getName() {
        return NbBundle.getMessage(SearchReplace.class, "SearchReplace.name");
    }

    @Override
    public String getDescription() {
        return "";
    }

    @Override
    public boolean canExecute() {<FILL_FUNCTION_BODY>}

    @Override
    public ManipulatorUI getUI() {
        return null;
    }

    @Override
    public int getType() {
        return 100;
    }

    @Override
    public int getPosition() {
        return 0;
    }

    @Override
    public Icon getIcon() {
        return ImageUtilities
            .loadImageIcon("DataLaboratoryPlugin/binocular--pencil.png", false);
    }

    private Table getCurrentTable() {
        DataTablesController dtc = Lookup.getDefault().lookup(DataTablesController.class);
        if (dtc.getDataTablesEventListener() == null) {
            return null;
        }
        if (dtc.isNodeTableMode()) {
            return Lookup.getDefault().lookup(GraphController.class).getGraphModel().getNodeTable();
        } else {
            return Lookup.getDefault().lookup(GraphController.class).getGraphModel().getEdgeTable();
        }
    }
}

        Table currentTable = getCurrentTable();
        return currentTable != null &&
            Lookup.getDefault().lookup(AttributeColumnsController.class).getTableRowsCount(currentTable) >
                0;//Make sure that there is at least 1 row
    
<no_super_class>