#vulnerable code 
                                protected String getTargetPath() {
        String path = (String) resolveConfigKey("wdm.targetPath", targetPath);
        if (path.contains(HOME)) {
            path = path.replace(HOME, System.getProperty("user.home"));
        }
        return path;
    } 
                            #location 3 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                                protected String getTargetPath() {
        String path = null;
        Object resolved = resolveConfigKey("wdm.targetPath", targetPath);
        if (resolved != null) {
            path = (String) resolved;
            if (path.contains(HOME)) {
                path = path.replace(HOME, System.getProperty("user.home"));
            }
        }
        return path;
    }