capybara/virtualenv/lib/python2.7/site-packages/flask/blueprints.py
def before_app_first_request(self, f):
        """Like :meth:`Flask.before_first_request`.  Such a function is
        executed before the first request to the application.
        """
        self.record_once(lambda s: s.app.before_first_request_funcs.append(f))
        return f
def before_app_first_request(self, f):
        """Like :meth:`Flask.before_first_request`.  Such a function is
        executed before the first request to the application.
        """
        self.record_once(lambda s: s.app.before_first_request_funcs.append(f))
        return f
Like :meth:`Flask.before_first_request`.  Such a function is
        executed before the first request to the application.