Extract from examples.

``` Jun 19 11:07:47 localhost kamailio[8645]: 5(8658) ERROR: app_python3 [python_support.c:156]: python_handle_exception(): apy_exec: ksr_request_route((null)): Unhandled exception in the Python code: Jun 19 11:07:47 localhost kamailio[8645]: AttributeError: 'kamailio' object has no attribute 'ksr_onsend_route' Jun 19 11:07:47 localhost kamailio[8645]: During handling of the above exception, another exception occurred: Jun 19 11:07:47 localhost kamailio[8645]: Traceback (most recent call last): Jun 19 11:07:47 localhost kamailio[8645]: File "/etc/kamailio/kamailio.py", line 68, in ksr_request_route Jun 19 11:07:47 localhost kamailio[8645]: if self.ksr_route_withindlg(msg) ==- 255: Jun 19 11:07:47 localhost kamailio[8645]: File "/etc/kamailio/kamailio.py", line 202, in ksr_route_withindlg Jun 19 11:07:47 localhost kamailio[8645]: self.ksr_route_relay(msg) Jun 19 11:07:47 localhost kamailio[8645]: File "/etc/kamailio/kamailio.py", line 135, in ksr_route_relay Jun 19 11:07:47 localhost kamailio[8645]: if KSR.tm.t_relay(): Jun 19 11:07:47 localhost kamailio[8645]: SystemError: <built-in function t_relay> returned a result with an error set Jun 19 11:07:47 localhost kamailio[8645]: 5(8658) DEBUG: app_python3 [apy_kemi.c:112]: sr_kemi_config_engine_python(): execution of route type 1 with no name returned -1 ```