[Demonstration 1]

[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));

[Demonstration 2]

[Buggy Method]
@Override
public StorageAccountImpl refresh() throws Exception {
    ServiceResponse<StorageAccountInner> response = this.client.getProperties(this.resourceGroupName(), this.key);
    StorageAccountInner storageAccountInner = response.getBody();
    this.setInner(storageAccountInner);
    clearWrapperProperties();
    return this;
}

[Buggy Hunk]
this.client.getProperties(this.resourceGroupName(), this.key);

[Patch]
this.client.getProperties(this.resourceGroupName(), this.name());

[Demonstration 3]

[Buggy Method]
private void process(byte[] data) {
    // 根据数据标志获取数据
    if (this.existDataMark()) {
        ArrayList<byte[]> out = new ArrayList<byte[]>(2);
        // 数据递归提取
        this.extract(out, data);
        if (!out.isEmpty()) {
            for (byte[] bytes : out) {
                Message message = new Message(bytes);
                if (null != this.handler) {
                    this.handler.messageReceived(this.session, message);
                }
            }
            out.clear();
        }
        out = null;
    } else {
        Message message = new Message(data);
        if (null != this.handler) {
            this.handler.messageReceived(this.session, message);
        }
    }
}

[Buggy Hunk]
ArrayList<byte[]> out = new ArrayList<byte[]>(2);

[Patch]
LinkedList<byte[]> out = new LinkedList<byte[]>();