Node Connectivity
There are 5 nodes that can be used as predessesor
for a node with an input port of type 
org.knime.dl.base.portobjects.DLAbstractNetworkPortObject.
ONNX Network Reader
Reads ONNX deep learning networks.
ONNX to TensorFlow Network Converter
Converts an ONNX network to a TensorFlow network.
Keras to TensorFlow Network Converter
Converts a Keras deep learning model with TensorFlow backend to a TensorFlow model.
TensorFlow Network Reader
Reads a TensorFlow saved model from an input zip file or directory.
TensorFlow 2 Network Reader
Reads a TensorFlow 2 network from a file or directory.