[Demonstration 1]

[Buggy Method]
@Test
public void testDeleteFolders() throws Exception {
    String siteName = "siteCMISDelete" + System.currentTimeMillis();
    String userName = "cmisUserDelete" + System.currentTimeMillis();
    String rootFolder = "cmisFolderDelete" + System.currentTimeMillis();
    String secondFolder = "cmisSecondFolder" + System.currentTimeMillis();
    userService.create(admin, admin, userName, password, password);
    site.create(userName, password, "mydomain", siteName, "my site description", Visibility.PUBLIC);
    Folder rootFld = content.createFolder(userName, password, rootFolder, siteName);
    Assert.assertFalse(rootFld.getId().isEmpty());
    Map<String, String> properties = new HashMap<>();
    properties.put(PropertyIds.OBJECT_TYPE_ID, "cmis:folder");
    properties.put(PropertyIds.NAME, secondFolder);
    Folder secondFld = rootFld.createFolder(properties);
    Assert.assertFalse(secondFld.getId().isEmpty());
    content.deleteFolder(userName, password, siteName, secondFolder);
    content.deleteFolder(userName, password, siteName, rootFolder);
    Assert.assertTrue(content.getNodeRef(userName, password, siteName, rootFolder).isEmpty());
    Assert.assertTrue(content.getNodeRef(userName, password, siteName, secondFolder).isEmpty());
}

[Buggy Hunk]
Map<String, String> properties = new HashMap<>();

[Patch]
Map<String, String> properties = new HashMap<String, String>();

[Demonstration 2]

[Buggy Method]
private void generateEnvironmentGroups(JSONObject json) throws InventoryException {
    // Generate the environment group
    for (CiResource environment : envHosts.keySet()) {
        JSONObject env = new JSONObject();
        JSONArray hosts = new JSONArray();
        for (CiResource host : envHosts.get(environment)) {
            String publicIp = computeHostId(host);
            hosts.put(publicIp);
        }
        env.put("hosts", hosts);
        Map ciAddlProps = environment.getCiAttributes().getAdditionalProperties();
        JSONObject vars = new JSONObject();
        vars.put("oo_env_id", environment.getCiId());
        vars.put("oo_env_name", environment.getCiName());
        vars.put("oo_env_namespace", environment.getNsPath());
        vars.put("oo_env_profile", ciAddlProps.get("profile"));
        vars.put("oo_env_availability", ciAddlProps.get("availability"));
        addGlobalVariables(environment, vars);
        env.put("vars", vars);
        json.append("env-" + environment.getCiName(), env);
    }
}

[Buggy Hunk]
json.append("env-" + environment.getCiName(), env );

[Patch]
json.put("env-" + environment.getCiName(), env );

[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));