Loading keras functional (vs sequential) model is not implemented

[Licho1]

If you try to load functional keras model by using: keras.models.load_model(path); It fails because it is not implemented in: private Model _revive_graph_network(string identifier, KerasMetaData metadata, int node_id) else if (className == "Functional") throw new NotImplementedException("");

Example of such model is for example EfficientNetB7 from keras.applications