List dataSources = getReportDesignHandle( ).getVisibleDataSources( ); if ( dataSources.isEmpty( ) ) {  new NewDataSourceAction( ).run( ); }
	protected int invokeNewDataSet( )	{		IAction action = new NewDataSetAction( );		PlatformUI.getWorkbench( ).getHelpSystem( ).setHelp( action,				ChartHelpContextIds.DIALOG_NEW_DATA_SET );		action.run( );		return Window.OK;	}