private void maybeRestoreVertices(Collection<V> toRestore) {
		for (V v : toRestore) {
			if (!completeGraph.containsVertex(v)) {
				// don't restore vertices that were never added through the normal interface
				continue;
			}

			performInternalUpdate(() -> super.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