@Override
	public int compareTo(Edge edge) {
		if (this.key() < edge.key()) {
			return -1;
		}
		else if (this.key() > edge.key()) {
			return +1;
		}
		return 0;
	}
Compare one edge to another. Based on time of creation.
Ghidra/Framework/Generic/src/main/java/ghidra/util/graph/Edge.java