code: def _gen_fn_signature(schema, schema_name, fn_name):
      """Write the stub of the fn API function with the docstring, for given operator.
      Include two overloads: with regular inputs and secondary accepting MIS.
      If there are no inputs, we have only one signature.
      """
      if schema.MaxNumInput() == 0:
          return inspect_repr_fixups(
              _gen_fn_signature_no_input(schema, schema_name, fn_name)
          )
      else:
          return inspect_repr_fixups(
              _gen_fn_signature_with_inputs(
                  schema, schema_name, fn_name
              )
          )
  
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 16 for calling a global function with example usage: _gen_fn_signature(schema, schema_name, fn_name) and returns: inspect_repr_fixups, inspect_repr_fixups