def level(self, website=None, store_view=None, parent_category=None):
        """
        Retrieve one level of categories by website/store view/parent category

        :param website: Website code or ID
        :param store_view: storeview code or ID
        :param parent_category: Parent Category ID
        :return: Dictionary
        """
        return self.call(
            'catalog_category.level', [website, store_view, parent_category]
        )
Retrieve one level of categories by website/store view/parent category

        :param website: Website code or ID
        :param store_view: storeview code or ID
        :param parent_category: Parent Category ID
        :return: Dictionary