def init_app(self, app):
        self.app = app
        app.extensions = getattr(app, 'extensions', {})
        app.extensions['oauthlib.provider.oauth1'] = self
This callback can be used to initialize an application for the
dataset/ETHPy150Open lepture/flask-oauthlib/flask_oauthlib/provider/oauth1.py/OAuth1Provider.init_app