private void restoreAllVertices() {
		Collection<V> allVertices = completeGraph.getVertices();
		performInternalUpdate(() -> {
			allVertices.forEach(v -> addVertex(v));
		});
	}
Returns all edges connected to the given vertices.

<P>This method is needed if you wish to find relationships that have been filtered 
out.

@param sourceVertices the vertices for which to get the edges
@return the reachable edges
Ghidra/Framework/Graph/src/main/java/ghidra/graph/graphs/FilteringVisualGraph.java