var collection arvados.Collection
err := api.Update("collections", "aaaaa-4zz18-ccccccccccccccc", Dict{"collection": Dict{"name": "update example"}}, &collection)
var collection arvados.Collection
err := api.Update("collections", "aaaaa-4zz18-ccccccccccccccc", Dict{"collection": Dict{"name": "update example"}}, &collection)