public Widget createExample() {
PlotModel model = new PlotModel();
PlotOptions plotOptions = new PlotOptions();
BarSeriesOptions barSeriesOptions = new BarSeriesOptions();
barSeriesOptions.setShow(true);
barSeriesOptions.setLineWidth(1);
barSeriesOptions.setBarWidth(1);
barSeriesOptions.setAlignment(BarAlignment.CENTER);
plotOptions.setDefaultBarsSeriesOptions(barSeriesOptions);
plotOptions.setLegendOptions(new LegendOptions().setShow(false));
// add tick formatter to the options