curl -X GET https://api.box.com/2.0/folders/0/items \
     -H 'Authorization: Bearer <ACCESS_TOKEN>'

BoxCollection<BoxItem> folderItems = await client.FoldersManager.GetFolderItemsAsync("11111", 100);

BoxFolder folder = new BoxFolder(api, "id");
for (BoxItem.Info itemInfo : folder) {
    if (itemInfo instanceof BoxFile.Info) {
        BoxFile.Info fileInfo = (BoxFile.Info) itemInfo;
        // Do something with the file.
    } else if (itemInfo instanceof BoxFolder.Info) {
        BoxFolder.Info folderInfo = (BoxFolder.Info) itemInfo;
        // Do something with the folder.
    }
}

items = client.folder(folder_id='22222').get_items()
for item in items:
    print('{0} {1} is named "{2}"'.format(item.type.capitalize(), item.id, item.name))

client.folders.getItems(
    '12345',
    {
        usemarker: 'false',
        fields: 'name',
        offset: 0,
        limit: 25
    })
    .then(items => {
        /* items -> {
            total_count: 2,
            entries: 
            [ { type: 'folder',
                id: '11111',
                sequence_id: '1',
                etag: '1',
                name: 'Personal Documents' },
                { type: 'file',
                id: '22222',
                sequence_id: '0',
                etag: '0',
                name: 'Q2 Strategy.pptx' } ],
            offset: 0,
            limit: 25,
            order: 
            [ { by: 'type', direction: 'ASC' },
                { by: 'name', direction: 'ASC' } ] }
        */
    });

let folderItems = client.folders.listItems(folderId: "22222", sort: .name, direction: .ascending) { results in
    switch results {
    case let .success(iterator):
        for i in 1 ... 10 {
            iterator.next { result in
                switch result {
                case let .success(item):
                    switch item {
                    case let .file(file):
                        print("File \(file.name) (ID: \(file.id)) is in the folder")
                    case let .folder(folder):
                        print("Subfolder \(folder.name) (ID: \(folder.id)) is in the folder")
                    case let .webLink(webLink):
                        print("Web link \(webLink.name) (ID: \(webLink.id)) is in the folder")
                    }
                case let .failure(error):
                    print(error)
                }
            }
        }
    case let .failure(error):
        print(error)
    }
}