So far I found this discussion
https://groups.google.com/forum/#!topic/adwords-api/lzqA8W1w7F0
which points to this page in the documentation:
http://code.google.com/apis/adwords/docs/developer/CriterionService.html#setCampaignNegativeCriteria
- but it doesn't exist (404)
There's also this discussion
https://groups.google.com/forum/#!msg/adwords-api/MpHClRBcLoQ/kzm4WkxY3F0J
leads to below sourceforge docs:
setCampaignNegativeCriteria
which describes Java, and is hosted in sourceforge
Where is the official google-adwords-API documentation about it?
(p.s. i'm using python)