code: def mish(x: None, /, *, out: Optional[None] = None) -> None:
      raise IvyNotImplementedException()
  
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 9 for calling a global function with example usage: mish() without return types