super(sourceUnit, INVALID_STATEMENT);
        this.ruleVisitor = ruleVisitor;
    }

    public static void visitGeneratedClosure(ClassNode node) {
        MethodNode method = AstUtils.getGeneratedClosureImplMethod(node);
        Boolean isRulesBlock = method.getCode().getNodeMetaData(AST_NODE_METADATA_KEY);
        if (isRulesBlock != null) {
            AnnotationNode markerAnnotation = new AnnotationNode(ANNOTATION_CLASS_NODE);

            return ((BlockStatement) statement).getStatements();
        } else {
            return Collections.singleton(statement);
        }
    }

    public static MethodNode getGeneratedClosureImplMethod(ClassNode classNode) {
        if (!classNode.implementsInterface(ClassHelper.GENERATED_CLOSURE_Type)) {
            throw new IllegalArgumentException("expecting generated closure class node");
        }

    }

    // Not part of a normal visitor, see ClosureCreationInterceptingVerifier
    public static void visitGeneratedClosure(ClassNode node) {
        MethodNode closureCallMethod = AstUtils.getGeneratedClosureImplMethod(node);
        Statement closureCode = closureCallMethod.getCode();
        InputReferences inputs = closureCode.getNodeMetaData(AST_NODE_METADATA_INPUTS_KEY);
        if (inputs != null) {