[Demonstration 1]

[Buggy Method]
public List<String> removeDefaultAPIFromGateway(API api) {
    String tenantDomain = null;
    if (api.getId().getProviderName().contains("AT")) {
        String provider = api.getId().getProviderName().replace("-AT-", "@");
        tenantDomain = MultitenantUtils.getTenantDomain(provider);
    }
    APIGatewayManager gatewayManager = APIGatewayManager.getInstance();
    return gatewayManager.removeDefaultAPIFromGateway(api, tenantDomain);
}

[Buggy Hunk]
public List<String> removeDefaultAPIFromGateway(API api) {

[Patch]
public Map<String, String> removeDefaultAPIFromGateway(API api) {

[Demonstration 2]

[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 3]

[Buggy Method]
private Map<String, String> load() {
    if (!messages.isEmpty()) {
        return messages;
    }
    try {
        JPA.em();
    } catch (Throwable e) {
        return messages;
    }
    String lang = locale.getLanguage();
    Query<MetaTranslation> query = Query.of(MetaTranslation.class).filter("self.language = ?", lang).autoFlush(false);
    if (query.count() == 0 && lang.length() > 2) {
        query = Query.of(MetaTranslation.class).filter("self.language = ?", lang.substring(0, 2));
    }
    long total = query.count();
    int offset = 0;
    int limit = 100;
    while (offset < total) {
        for (MetaTranslation tr : query.fetch(limit, offset)) {
            if (tr.getMessage() != null) {
                messages.put(tr.getKey(), tr.getMessage());
            }
        }
        offset += limit;
    }
    return messages;
}

[Buggy Hunk]
Query<MetaTranslation> query = Query.of(MetaTranslation.class).filter("self.language = ?", lang).autoFlush(false);

[Patch]
Query<MetaTranslation> query = Query.of(MetaTranslation.class).filter("self.language = ?", lang).order("id").autoFlush(false);