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

BoxCollection<BoxCollectionItem> collections = await client.CollectionsManager.GetCollectionsAsync();

Iterable<BoxCollection.Info> collections = BoxCollection.getAllCollections(api);
for (BoxCollection.Info collectionInfo : collections) {
	// Do something with the collection.
}

collections = client.collections()
for collection in collections:
    print('Collection "{0}" has ID {1}'.format(collection.name, collection.id))

client.collections.getAll()
	.then(collections => {
		/* collections -> { total_count: 1,
			entries: 
			[ { type: 'collection',
				id: '11111',
				name: 'Favorites',
				collection_type: 'favorites' } ],
			limit: 100,
			offset: 0 }
		*/
	});