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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def create_child_folder(self, name, description=None):
 """ Creates a Child Folder :param str name: the name of the new child folder :param str description: the description of the new child folder :return: newly created folder :rtype: drive.Folder """


        if not self.object_id:
            return None

        url = self.build_url(
            self._endpoints.get('list_items').format(id=self.object_id))

        data = {'name': name, 'folder': {}}
        if description:
            data['description'] = description

        response = self.con.post(url, data=data)
        if not response:
            return None

        folder = response.json()

        return self._classifier(folder)(parent=self,
                                        **{self._cloud_data_key: folder})