[BUG Report]: Loading model error "Constructor on type 'Tensorflow.Keras.Layers.ZeroPadding2D' not found"

[markalroberts]

Description

When loading a model saved from python, it looks like it cannot find the constructor for Tensorflow.Keras.Layers.ZeroPadding2D owing to the fact that the single constructor that does exist has an additional optional parameter.

Reproduction Steps

Train and save a model in python: model.save('chart_type_classifier.model', save_format='tf')

Load the model in TensoFlow.Keras in c# .net

System.MissingMethodException
  HResult=0x80131513
  Message=Constructor on type 'Tensorflow.Keras.Layers.ZeroPadding2D' not found.
  Source=System.Private.CoreLib
  StackTrace:
   at System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture)

Code where it blows up:

object obj2 = Assembly.Load("Tensorflow.Keras").CreateInstance("Tensorflow.Keras.Layers." + class_name, ignoreCase: true, BindingFlags.Default, null, new object[1] { obj }, null, null);

Note single argument.

Constructor that should be used but cannot be found owing to additional optional parameter:

    public ZeroPadding2D(ZeroPadding2DArgs args, string data_format = null)
      : base((LayerArgs) args)
    {
      this.data_format = conv_utils.normalize_data_format(data_format);
      this.padding = args.Padding;
      this.input_spec = new InputSpec(ndim: new int?(4));
    }

Known Workarounds

No response

Configuration and Other Information

No response