class_docstr: Generator operator.
code: def output_schema(self):
      return [(int, (1,)), (int, (1,))]
  
file_path: towhee/tests/unittests/mock_operators/generator_with_timestamp/generator_with_timestamp.py
imports: from typing import Generator, NamedTuple
  from towhee.operator import Operator, SharedType
label_desc: Use image node_id 5 for calling the GeneratorWithTimestamp obj's underlying member method code with example usage: obj.output_schema() and returns: list