def output_json(self, file_name='/tmp/ND.json'):
        """
        Arguments:
            file_name(str : '/tmp/ND.json'): The file name to store the json to

        Returns:
            None
        """
        complete_example = (
            self.dataset, self.project, self.channels, self.metadata)
        data = json.loads(self.nd_json(*complete_example))

        # self.verify_json(data)
        self.verify_path(data, VERIFY_BY_SLICE)

        f = open(file_name, 'w')
        f.write(str(data))
        f.close()
Arguments:
            file_name(str : '/tmp/ND.json'): The file name to store the json to

        Returns:
            None