Determine if error should be handled with FR or default Flask

        The goal is to return Flask error handlers for non-FR-related routes,
        and FR errors (with the correct media type) for FR endpoints. This
        method currently handles 404 and 405 errors.

        :return: bool

def _should_use_fr_error_handler(self):
        """ Determine if error should be handled with FR or default Flask

        The goal is to return Flask error handlers for non-FR-related routes,
        and FR errors (with the correct media type) for FR endpoints. This
        method currently handles 404 and 405 errors.

        :return: bool
        """
        adapter = current_app.create_url_adapter(request)

        try:
            adapter.match()
        except MethodNotAllowed as e:
            # Check if the other HTTP methods at this url would hit the Api
            valid_route_method = e.valid_methods[0]
            rule, _ = adapter.match(method=valid_route_method, return_rule=True)
            return self.owns_endpoint(rule.endpoint)
        except NotFound:
            return self.catch_all_404s
        except:
            # Werkzeug throws other kinds of exceptions, such as Redirect
            pass