Change file name from 'injector_registry' to
'injector_registrar'.
Change file name from 'injector_registry' to
'injector_registrar'.
Change object name from 'InjectorRegistry' to 'InjectorRegistrar'.
Change file name from 'point_registrar' to 'port_registrar'.
Remove 'PointRegistrar' import.
Change object name from 'PointRegistrar' to 'PortRegistrar'.