private void outputCircuit() {
		List<V> circuit = new ArrayList<>(stack);
		circuit.add(startVertex);
		accumulator.add(circuit);
	}
Finds the circuits in the graph passed at construction time.

@param uniqueCircuits true signals to return only unique circuits, where no two 
       circuits will contain the same vertex
@param monitor the task monitor
@throws CancelledException if the monitor is cancelled
Ghidra/Framework/Graph/src/main/java/ghidra/graph/algo/JohnsonCircuitsAlgorithm.java