code: def init_app(self, app):
          
          app.config.setdefault('SSLIFY_AGE', self.defaults['age'])
          app.config.setdefault('SSLIFY_SUBDOMAINS', self.defaults['subdomains'])
          app.config.setdefault('SSLIFY_PERMANENT', self.defaults['permanent'])
          app.config.setdefault('SSLIFY_SKIPS', self.defaults['skips'])
  
          app.before_request(self.redirect_to_ssl)
          app.after_request(self.set_hsts_header)
docs: Configures the specified Flask app to enforce SSL.