public Row<V> lastRow() {

		Entry<Integer, Row<V>> lastEntry = rowsByIndex.lastEntry();
		if (lastEntry == null) {
			return null;
		}
		return lastEntry.getValue();
	}
Returns the rows in this location map, sorted from lowest index to highest 

@return the rows in this location map, sorted from lowest index to highest
Ghidra/Framework/Graph/src/main/java/ghidra/graph/viewer/layout/LayoutLocationMap.java