len(api.domains) example from README not working

[Yannik]

Hi,

I have tried the len(api.domains) example from the README, and it leads to the following error:

>>> from httpnet.client import HttpNetClient
>>> AUTH_TOKEN='my-auth-token'
>>> api = HttpNetClient(auth_token=AUTH_TOKEN)
>>> len(api.domains)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: object of type 'DomainService' has no len()

How is this supposed to work exactly? Should it internally do a find-operation (without a filter) to get the number of all domains?

[Yannik]

Using

zones = api.dns_zone_configs.find()
 len(zones)

also does not work, resulting in a object of type 'generator' has no len() error.