code: def softmax(
      x: None,
      /,
      *,
      axis: Optional[int] = None,
      out: Optional[None] = None,
  ) -> None:
      return mx.nd.softmax(x, axis=axis)
  
file_path: ivy/ivy/functional/backends/mxnet/activations.py
imports: import mxnet
  import numpy
  from ivy.utils.exceptions import IvyNotImplementedException
  from typing import Optional, Union
label_desc: Use image node_id 5 for calling a global function with example usage: softmax() and returns: mx