code: def create_connection_model(service):
      
      # the services connected
      services = service._services
  
      # the mixins / base for the model
      bases = (BaseModel,)
      # the fields of the derived
      attributes = {model_service_name(service): fields.CharField() for service in services}
  
      # create an instance of base model with the right attributes
      return type(BaseModel)(connection_service_name(service), bases, attributes)
docs: Create an SQL Alchemy table that connects the provides services