code: def get_weights_data(self, layer_name, var_name):
      raise NotImplementedError
  
imports: import json
  import h5py
  from hls4ml.model import ModelGraph
label_desc: Use image node_id 1 for calling the KerasReader obj's underlying member method code with example usage: obj.get_weights_data(layer_name, var_name) without return types