@Override
	public Edge getKeyedObject(long key) {
		if (edgeIndices.contains(key)) {
			try {
				return edges[edgeIndices.get(key)];
			}
			catch (Exception e) {
				return null;
			}
		}
		return null;
	}
Used to test if edges have been added or removed from this edge set.
Ghidra/Framework/Generic/src/main/java/ghidra/util/graph/EdgeSet.java