Save all the forms

        :param \*args: Positional arguments passed to the forms
        :param \*\*kwargs: Keyword arguments passed to the forms
        :return: Sequence of returned values by all the forms as tuples of (instance, result)
        :rtype: list

def save(self, *args, **kwargs):
        """
        Save all the forms

        :param \*args: Positional arguments passed to the forms
        :param \*\*kwargs: Keyword arguments passed to the forms
        :return: Sequence of returned values by all the forms as tuples of (instance, result)
        :rtype: list
        """
        return [
            (form, form.save(*args, **kwargs))
            for form in self.instances
        ]