[Demonstration 1]

[Buggy Method]
private static final SharedPreferences getSharedPreferences(Context context) {
    return context.getSharedPreferences(CredentialsStorage.class.getCanonicalName(), 0);
}

[Buggy Hunk]
private static final SharedPreferences getSharedPreferences(Context context) {

[Patch]
private static SharedPreferences getSharedPreferences(Context context) {

[Demonstration 2]

[Buggy Method]
public static APINodeList<APINode> parseResponse(String json, APIContext context, APIRequest<APINode> request) {
    APINodeList<APINode> nodes = new APINodeList<APINode>(request, json);
    JsonArray arr;
    JsonObject obj;
    JsonParser parser = new JsonParser();
    try {
        JsonElement result = parser.parse(json);
        if (result.isJsonArray()) {
            // First, check if it's a pure JSON Array
            arr = result.getAsJsonArray();
            for (int i = 0; i < arr.size(); i++) {
                nodes.add(loadJSON(arr.get(i).getAsJsonObject().toString(), context));
            }
            ;
            return nodes;
        } else if (result.isJsonObject()) {
            obj = result.getAsJsonObject();
            if (obj.has("data")) {
                try {
                    JsonObject paging = obj.get("paging").getAsJsonObject().get("cursors").getAsJsonObject();
                    nodes.setPaging(paging.get("before").getAsString(), paging.get("after").getAsString());
                } catch (Exception ignored) {
                }
                if (obj.get("data").isJsonArray()) {
                    // Second, check if it's a JSON array with "data"
                    arr = obj.get("data").getAsJsonArray();
                    for (int i = 0; i < arr.size(); i++) {
                        nodes.add(loadJSON(arr.get(i).getAsJsonObject().toString(), context));
                    }
                    ;
                } else if (obj.get("data").isJsonObject()) {
                    // Third, check if it's a JSON object with "data"
                    obj = obj.get("data").getAsJsonObject();
                    nodes.add(loadJSON(obj.toString(), context));
                }
                return nodes;
            } else if (obj.has("images")) {
                // Fourth, check if it's a map of image objects
                obj = obj.get("images").getAsJsonObject();
                for (Map.Entry<String, JsonElement> entry : obj.entrySet()) {
                    nodes.add(loadJSON(entry.getValue().toString(), context));
                }
                return nodes;
            } else {
                // Fifth, check if it's pure JsonObject
                nodes.add(loadJSON(json, context));
                return nodes;
            }
        }
    } catch (Exception e) {
    }
    return null;
}

[Buggy Hunk]
public static APINodeList<APINode> parseResponse(String json, APIContext context, APIRequest<APINode> request) {

[Patch]
public static APINodeList parseResponse(String json, APIContext context, APIRequest<APINode> request) {

[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));