#vulnerable code 
                                public Optional<Value> solveSymbolAsValue(String name, Node node) {
        return solveSymbolAsValue(name, JavaParserFactory.getContext(node));
    } 
                            #location 2 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                                public Optional<Value> solveSymbolAsValue(String name, Node node) {
        Context context = JavaParserFactory.getContext(node);
        return solveSymbolAsValue(name, context);
    }