public void whitenChildren(Vertex v) {
		Iterator<Vertex> it = this.getChildren(v).iterator();
		while (it.hasNext()) {
			Vertex next = it.next();
			if (this.getCallingParent(next).equals(v)) {
				this.setColor(next, white);
			}
		}
	}
Whitens the children of v.  It is only called after v has no more
 children left and we have backtracked to the calling parent of
 v.  This is to ensure that we don't miss out on any paths that
 contain a child of v which has other parents.
Ghidra/Framework/Generic/src/main/java/ghidra/util/graph/Dominator.java