code: def create_backends_from_settings(self):
          
          config = getattr(settings, DJANGO_BACKEND_SETTING_NAME, {})
  
          backends = self.instantiate_objects(config)
  
          return backends
docs: Expects the Django setting "EVENT_TRACKING_BACKENDS" to be defined and point
          to a dictionary of backend engine configurations.
  
          Example::
  
              EVENT_TRACKING_BACKENDS = {
                  'default': {
                      'ENGINE': 'some.arbitrary.Backend',
                      'OPTIONS': {
                          'endpoint': 'http://something/event'
                      }
                  },
                  'another_engine': {
                      'ENGINE': 'some.arbitrary.OtherBackend',
                      'OPTIONS': {
                          'user': 'foo'
                      }
                  },
              }