raise SfaInvalidArgument('Must specify an rspec version option. geni_rspec_version cannot be null')
valid_creds = self.api.auth.checkCredentials(creds, 'listnodes', urns, \
- check_sliver_callback = self.api.manager.driver.check_sliver_credentials)
+ check_sliver_callback = self.api.driver.check_sliver_credentials)
# get hrn of the original caller
origin_hrn = options.get('origin_hrn', None)