class_docstr: Flat input list.
code: def __init__(self):
      pass
  
file_path: towhee/tests/unittests/mock_operators/sum_operator/sum_operator.py
imports: from typing import NamedTuple, List
  from towhee.operator import Operator, SharedType
label_desc: Use image node_id 1 to create a new SumOperator object from inherited base classes: Operator with example: obj = SumOperator()