This problem just started in Google App Engine version 1.8.6:
When executing command (based on instruction https://developers.google.com/appengine/docs/python/endpoints/gen_clients):
endpointscfg.py get_client_lib java -o . -f rest your_module.YourApi
We get error:
endpointscfg.py: error: unrecognized arguments: -f
The command with argument -f execute without any issue for Google App Engine version 1.8.5.
With 1.8.6, I don't know how to generate client end point library, because of this error. If you have a workaround, please help.