code: def _unique_dispatcher(
      ar,
      return_index=None,
      return_inverse=None,
      return_counts=None,
      axis=None,
      *,
      equal_nan=None,
  ):
      return (ar,)
  
imports: import functools
  import warnings
  from typing import NamedTuple
  import numpy
  from numpy._core import overrides
label_desc: Use image node_id 4 for calling a global function with example usage: _unique_dispatcher(ar, return_index, return_inverse, return_counts, axis) and returns: ar