void setCurrentGroupSize(int groupSize) {
		if (currentView == null) {
			return;
		}
		ByteBlockInfo info = currentView.getViewerCursorLocation();
		currentView.setGroupSize(groupSize);
		if (info != null) {
			setCursorLocation(info.getBlock(), info.getOffset(), info.getColumn());
		}
		// force everything to get validated, or else the
		// header columns do not get repainted properly...

		invalidate();
		validate();
		repaint();
	}
Set the group size on the current view.

@param groupSize new group size
Ghidra/Features/ByteViewer/src/main/java/ghidra/app/plugin/core/byteviewer/ByteViewerPanel.java