String label = this.labelGenerator.generateSectionLabel(
this.dataset, keys.getKey(i)
);
if (label != null) {
TextBlock block = TextUtilities.createTextBlock(
label, this.labelFont, this.labelPaint,
maxLabelWidth, new G2TextMeasurer(g2)
);
TextBox labelBox = new TextBox(block);
labelBox.setBackgroundPaint(this.labelBackgroundPaint);