#vulnerable code 
                                private String processVForValue(String vForValue)
    {
        VForDefinition vForDef = new VForDefinition(vForValue, context);

        // Set return of the "in" expression
        currentExpressionReturnType = vForDef.getInExpressionType();

        String inExpression = vForDef.getInExpression();

        // Process in expression if it's java
        if (vForDef.isInExpressionJava())
        {
            inExpression = this.processExpression(inExpression);
        }

        // And return the newly built definition
        return vForDef.getVariableDefinition() + " in " + inExpression;
    } 
                            #location 17 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                                private String processVForValue(String vForValue)
    {
        VForDefinition vForDef = new VForDefinition(vForValue, context);

        // Set return of the "in" expression
        currentExpressionReturnType = vForDef.getInExpressionType();

        String inExpression = this.processExpression(vForDef.getInExpression());

        // And return the newly built definition
        return vForDef.getVariableDefinition() + " in " + inExpression;
    }