[Demonstration 1]

[Buggy Method]
@NotNull
public Bitmap loadCachedOrDefaultScheme() {
    final File file = new File(appActivity.getFilesDir(), LOCAL_FILE_NAME);
    LOG.warning(file.getAbsolutePath());
    if (file.exists()) {
        try {
            final Bitmap cachedScheme = BitmapFactory.decodeStream(new FileInputStream(file));
            if (cachedScheme == null) {
                LOG.warning("File: " + file.getPath());
                LOG.warning("No cached scheme founded in existing file " + file.getPath());
                //this.deleteFile(file.getPath());
            } else {
                LOG.info("cached scheme is returned");
                appActivity.writeWarningMessage("Cached map is loaded!");
                return cachedScheme;
            }
        } catch (FileNotFoundException e) {
            LOG.warning("can't find file " + e.getMessage());
        }
    }
    final Bitmap defaultScheme = BitmapFactory.decodeStream(getClass().getResourceAsStream(SCHEME_PATH));
    if (defaultScheme == null) {
        throw new RuntimeException("No default scheme founded");
    }
    LOG.info("default scheme is returned");
    appActivity.writeWarningMessage("Default image is loaded!");
    return defaultScheme;
}

[Buggy Hunk]
LOG.warning(file.getAbsolutePath());

[Patch]
LOG.info(file.getAbsolutePath());

[Demonstration 2]

[Buggy Method]
public void createFolder(Folder folder) {
    fileRepository.createFolder(mapFolder(folder));
}

[Buggy Hunk]
fileRepository.createFolder(mapFolder(folder));

[Patch]
fileRepository.createFolder(mapFolder(folder, null));

[Demonstration 3]

[Buggy Method]
public static Result service(String ownerName, String projectName, String service, boolean isAdvertise) throws IOException, UnsupportedOperationException, ServletException {
    if (!isSupportedService(service)) {
        return forbidden(String.format("Unsupported service: '%s'", service));
    }
    Project project = Project.findByOwnerAndProjectName(ownerName, projectName);
    if (project == null) {
        return notFound();
    }
    models.User user = UserApp.currentUser();
    if (!isAllowed(project, service)) {
        if (user.isAnonymous()) {
            return BasicAuthAction.unauthorized(response());
        } else {
            // If you want the Git client showing your custom message to
            // the user, the Content-Type should be exact "text/plain"
            // without any parameter. For more details, see the code at
            // https://github.com/git/git/commit/426e70d4a11ce3b4f70636d57c6a0ab16ae08a00#diff-eea0ad565ec5903a11b6023755d491cfR154
            response().setHeader("Content-Type", "text/plain");
            return forbidden(String.format("'%s' has no permission to '%s/%s'.", user.name, ownerName, projectName));
        }
    }
    if (isAdvertise) {
        return ok(RepositoryService.gitAdvertise(project, service, response()));
    } else {
        if (request().body().isMaxSizeExceeded()) {
            return status(REQUEST_ENTITY_TOO_LARGE);
        } else {
            user.visits(project);
            return ok(RepositoryService.gitRpc(project, service, request(), response()));
        }
    }
}

[Buggy Hunk]
user.name, ownerName, projectName));

[Patch]
user.loginId, ownerName, projectName));