code: def convert_softmax(builder, layer, input_names, output_names, keras_layer):
      
      input_name, output_name = (input_names[0], output_names[0])
  
      builder.add_softmax(name = layer, input_name = input_name,
              output_name = output_name)
docs: Convert a softmax layer from keras to coreml.
  
      Parameters
      keras_layer: layer
      ----------
          A keras layer object.
  
      builder: NeuralNetworkBuilder
          A neural network builder object.