code: def _get_annotation_input_mis(schema):
      """Return the annotation for multiple input sets, used for the secondary operator overload.
      A function is used as a global variable can be confused with type alias.
      Handles special case for operators with one input.
      """
      if schema.MinNumInput() == 1 and schema.MaxNumInput() == 1:
          return List[_DataNode]
      return Union[List[_DataNode], _DataNode, _TensorLikeIn]
  
imports: from inspect import Parameter, Signature
  import ast
  import os
  from pathlib import Path
  from contextlib import closing
  from typing import Union, Optional
  from typing import Sequence, List, Any
  from nvidia.dali import backend
  from nvidia.dali import types
  from nvidia.dali.ops import _registry, _names, _docs
  from nvidia.dali import types
  from nvidia.dali import ops, fn
label_desc: Use image node_id 7 for calling a global function with example usage: _get_annotation_input_mis(schema) and returns: Union, List