code: def expand_dims(
      x: Union[(None, mx.ndarray.NDArray)],
      /,
      *,
      copy: Optional[bool] = None,
      axis: Union[(int, Sequence[int])] = 0,
      out: Optional[Union[(None, mx.ndarray.NDArray)]] = None,
  ) -> Union[(None, mx.ndarray.NDArray)]:
      raise IvyNotImplementedException()
  
imports: import mxnet
  from numbers import Number
  from typing import Union, Tuple, Optional, List, Sequence
  import ivy
  from ivy.utils.exceptions import IvyNotImplementedException
label_desc: Use image node_id 2 for calling a global function with example usage: expand_dims() without return types