[Demonstration 1]

[Buggy Method]
public void setNewRenderableInstance(ClassLoader classLoader, Object renderableInstance) {
    this.classLoader = classLoader;
    this.renderableInstance = renderableInstance;
    this.currentFrame = 0;
    setMessageException(null);
    refresh();
}

[Buggy Hunk]
this.currentFrame = 0;

[Patch]
this.startTimeMillis = System.currentTimeMillis();

[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]
@Override
public void register(@Nonnull IModRegistry registry) {
    HELPERS = registry.getJeiHelpers();
    registry.addRecipeCategories(new BlacksmithsAnvilRecipeCategory());
    registry.addRecipeHandlers(new BlackSmithsAnvilRecipeHandler());
    registry.addRecipes(BSARecipeMaker.getRecipes());
    registry.addRecipeClickArea(GuiBlacksmithsAnvil.class, 17, 7, 30, 30, References.Compatibility.JEI.RecipeTypes.ANVIL);
    List<ItemStack> anvils = new ArrayList<>();
    GeneralRegistry.Blocks.blockBlackSmithsAnvil.getSubBlocks(Item.getItemFromBlock(GeneralRegistry.Blocks.blockBlackSmithsAnvil), null, anvils);
    for (ItemStack stack : anvils) registry.addRecipeCategoryCraftingItem(stack, References.Compatibility.JEI.RecipeTypes.ANVIL);
    getJeiHelpers().getNbtIgnoreList().ignoreNbtTagNames(References.NBTTagCompoundData.HeatedIngot.CURRENTTEMPERATURE);
    getJeiHelpers().getNbtIgnoreList().ignoreNbtTagNames(References.NBTTagCompoundData.HeatedIngot.ORIGINALITEM);
}

[Buggy Hunk]
registry.addRecipes(BSARecipeMaker.getRecipes());

[Patch]
registry.addRecipes(BlackSmithsAnvilRecipeMaker.getRecipes());