void setGroupSize(int groupSize) {
		model.setGroupSize(groupSize);
		createFields(); // redo the fields...
		layoutModel.setIndexMap(indexMap);
	}
Set the new group size

@param groupSize the group size
@throws UnsupportedOperationException if model for this view does not support groups
Ghidra/Features/ByteViewer/src/main/java/ghidra/app/plugin/core/byteviewer/ByteViewerComponent.java