code: def SequenceEmptyImpl() -> list[np.ndarray | None]:
      return []
  
file_path: onnx/onnx/backend/test/case/model/sequence.py
imports: from __future__ import annotations
  import typing
  import numpy
  import onnx
  from onnx import TensorProto
  from onnx.backend.test.case.base import Base
  from onnx.backend.test.case.model import expect
label_desc: Use image node_id 1 for calling a global function with example usage: SequenceEmptyImpl() and returns: list