(com.sun.star.chart2.XChartDocument) UnoRuntime.queryInterface(
com.sun.star.chart2.XChartDocument.class,
mxOldDoc );
// set title at new chart
XTitled xTitled = (XTitled) UnoRuntime.queryInterface(
XTitled.class, xNewDoc.getDiagram() );
// set title via new API
setTitle( xTitled, "Sub", "@sub-title" );