curl -X PUT https://api.box.com/2.0/folders/4353455 \
     -H 'Authorization: Bearer <ACCESS_TOKEN>'
     -H 'Content-Type: application/json" '
     -d '{
       "name": "New folder name"
     }'

var requestParams = new BoxFolderRequest()
{
    Id = "11111",
    Name = "My Documents (2017)"
};
BoxFolder updatedFolder = await client.FoldersManager.UpdateInformationAsync(requestParams);

BoxFolder folder = new BoxFolder(api, "id");
BoxFolder.Info info = folder.new Info();
info.setName("New Name");
folder.updateInfo(info);

updated_folder = client.folder(folder_id='22222').update_info({
    'name': '[ARCHIVED] Planning documents',
    'description': 'Old planning documents',
})
print('Folder updated!')

client.folders.update('11111', {name: 'Pictures from 2017'})
    .then(updatedFolder => {
        /* updatedFolder -> {
            type: 'folder',
            id: '11111',
            sequence_id: '1',
            etag: '1',
            name: 'Pictures from 2017',
            created_at: '2012-12-12T10:53:43-08:00',
            modified_at: '2012-12-12T11:15:04-08:00',
            description: 'Some pictures I took',
            size: 629644,
            path_collection: 
            { total_count: 1,
                entries: 
                [ { type: 'folder',
                    id: '0',
                    sequence_id: null,
                    etag: null,
                    name: 'All Files' } ] },
            created_by: 
            { type: 'user',
                id: '22222',
                name: 'Example User'
                login: 'user@example.com' },
            modified_by: 
            { type: 'user',
                id: '22222',
                name: 'Example User',
                login: 'user@example.com' },
            owned_by: 
            { type: 'user',
                id: '22222',
                name: 'Example User',
                login: 'user@example.com' },
            shared_link: null,
            parent: 
            { type: 'folder',
                id: '0',
                sequence_id: null,
                etag: null,
                name: 'All Files' },
            item_status: 'active',
            item_collection: 
            { total_count: 1,
                entries: 
                [ { type: 'file',
                    id: '33333',
                    sequence_id: '3',
                    etag: '3',
                    sha1: '134b65991ed521fcfe4724b7d814ab8ded5185dc',
                    name: 'tigers.jpeg' } ],
                offset: 0,
                limit: 100 } }
        */
    });