backlog_router() takes exactly 3 arguments (2 given)

[Nikolay Fedotov]

Ran into exception: TypeError: backlog_router() takes exactly 3 arguments (2 given)
The method needs second parameter but only context was given: def backlog_router(self, context, router_binding):

Full text:
2015-07-30 14:11:35.116 TRACE neutron.api.v2.resource Traceback (most recent call last):
2015-07-30 14:11:35.116 TRACE neutron.api.v2.resource  File "/opt/stack/neutron/neutron/api/v2/resource.py", line 83, in resource
2015-07-30 14:11:35.116 TRACE neutron.api.v2.resource  result = method(request=request, **args)
2015-07-30 14:11:35.116 TRACE neutron.api.v2.resource  File "/usr/local/lib/python2.7/dist-packages/oslo_db/api.py", line 146, in wrapper
2015-07-30 14:11:35.116 TRACE neutron.api.v2.resource  ectxt.value = e.inner_exc
2015-07-30 14:11:35.116 TRACE neutron.api.v2.resource  File "/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 119, in __exit__
2015-07-30 14:11:35.116 TRACE neutron.api.v2.resource  six.reraise(self.type_, self.value, self.tb)
2015-07-30 14:11:35.116 TRACE neutron.api.v2.resource  File "/usr/local/lib/python2.7/dist-packages/oslo_db/api.py", line 136, in wrapper
2015-07-30 14:11:35.116 TRACE neutron.api.v2.resource  return f(*args, **kwargs)
2015-07-30 14:11:35.116 TRACE neutron.api.v2.resource  File "/opt/stack/neutron/neutron/api/v2/base.py", line 499, in delete
2015-07-30 14:11:35.116 TRACE neutron.api.v2.resource  obj_deleter(request.context, id, **kwargs)
2015-07-30 14:11:35.116 TRACE neutron.api.v2.resource  File "/opt/stack/networking-cisco/networking_cisco/plugins/cisco/db/l3/l3_router_appliance_db.py", line 166, in delete_router
2015-07-30 14:11:35.116 TRACE neutron.api.v2.resource  self.backlog_router(id)
2015-07-30 14:11:35.116 TRACE neutron.api.v2.resource  File "/usr/local/lib/python2.7/dist-packages/oslo_concurrency/lockutils.py", line 252, in inner
2015-07-30 14:11:35.116 TRACE neutron.api.v2.resource  return f(*args, **kwargs)
2015-07-30 14:11:35.116 TRACE neutron.api.v2.resource TypeError: backlog_router() takes exactly 3 arguments (2 given)
2015-07-30 14:11:35.116 TRACE neutron.api.v2.resource