public Set<Edge> getIncomingEdges(Vertex v) {
		Set<Edge> incomingEdges = new HashSet<>();
		Edge e = vertices.getFirstIncomingEdge(v);
		while (e != null) {
			incomingEdges.add(e);
			e = edges.getNextEdgeWithSameTo(e);
		}
		return incomingEdges;
	}
Returns a Set containing all of the edges to the given vertex.
Ghidra/Framework/Generic/src/main/java/ghidra/util/graph/DirectedGraph.java