code: def mish(x):
      """Mish activation function.
  
      It is defined as:
  
      `mish(x) = x * tanh(softplus(x))`
  
      where `softplus` is defined as:
  
      `softplus(x) = log(exp(x) + 1)`
  
      Args:
          x: Input tensor.
  
      Reference:
  
      - [Misra, 2019](https://arxiv.org/abs/1908.08681)
      """
      x = backend.convert_to_tensor(x)
      return Mish.static_call(x)
  
imports: from keras import backend
  from keras import ops
  from keras.api_export import keras_export
label_desc: Use image node_id 17 for calling a global function with example usage: mish(x) and returns: Mish