code: def init_app(self, app):
          
  
          self.app = app
          if self.deferred:
              self.register_all(self.deferred)
docs: Initialise the ArrestedAPI object by storing a pointer to a Flask app object.
          This method is typically used when initialisation is deferred.
  
          :param app: Flask application object
  
          Usage::
  
              app = Flask(__name__)
              ap1_v1 = ArrestedAPI()
              api_v1.init_app(app)