def _api_create(cls, api_key=djstripe_settings.STRIPE_SECRET_KEY, **kwargs):
        """
        Call the stripe API's create operation for this model.
        :param api_key: The api key to use for this request. \
            Defaults to djstripe_settings.STRIPE_SECRET_KEY.
        :type api_key: string
        """

        if not kwargs.get("id"):
            raise KeyError("Transfer Object ID is missing")

        try:
            Transfer.objects.get(id=kwargs["id"])
        except Transfer.DoesNotExist:
            raise

        return stripe.Transfer.create_reversal(
            api_key=api_key,
            stripe_version=djstripe_settings.STRIPE_API_VERSION,
            **kwargs,
        )

        Call the stripe API's create operation for this model.
        :param api_key: The api key to use for this request.             Defaults to djstripe_settings.STRIPE_SECRET_KEY.
        :type api_key: string
        
djstripe/models/connect.py