void setParentFound() {
			if (parent != null) {
				parent.found = true;
			}
			unblock(v);
		}
Simple class to maintain a relationship between a given node and its children that need
processing.  It also knows if it has been found in a path from start to end.
Ghidra/Framework/Graph/src/main/java/ghidra/graph/algo/IterativeFindPathsAlgorithm.java