}
        } finally {
            action = null;
        }
    }

    @Override
    public boolean hasPendingPreExecutionNodes() {
        return !hasVisitedPreExecutionNode && action.getPreExecutionNode() != null;
    }

    @Override
    public void visitPreExecutionNodes(Consumer<? super Node> visitor) {

        destroyables
            .forEach(file -> getMutationInfo().destroyablePaths.add(file.getAbsolutePath()));
    }

    @Override
    public boolean hasPendingPreExecutionNodes() {
        return !hasVisitedMutationsNode;
    }

    @Override
    public void visitPreExecutionNodes(Consumer<? super Node> visitor) {
        if (!hasVisitedMutationsNode) {

     * Support for this is not implemented yet and will be added later.
     */
    public void visitPreExecutionNodes(Consumer<? super Node> visitor) {
    }

    public boolean hasPendingPreExecutionNodes() {
        return false;
    }

    /**
     * Visits the "post-execution" nodes of this node. These nodes should be treated as though they also produce the outputs or

                    readyNodes.removeAndRestart(node);
                    continue;
                }

                if (node.hasPendingPreExecutionNodes()) {
                    // The node is ready to execute and its pre-execution nodes have not been scheduled, so do this now
                    node.visitPreExecutionNodes(prepareNode -> {

            }
        }

        @Override
        Throwable getNodeFailure() {
            return failure
        }

        @Override
        boolean hasPendingPreExecutionNodes() {
            return !preExecuteNodes.isEmpty()
        }

        @Override
        void visitPreExecutionNodes(Consumer<? super Node> visitor) {
            for (final node in preExecuteNodes) {