code: def _find_data(self, layer_name, var_name):
      def h5_visitor_func(name):
          if var_name in name:
              return name
  
      layer_path = f"model_weights/{self.nested_path}/{layer_name}"
  
      data_path = self.h5file[layer_path].visit(h5_visitor_func)
      if data_path:
          return self.h5file[f"/{layer_path}/{data_path}"]
      else:
          return None
  
imports: import json
  import h5py
  from hls4ml.model import ModelGraph
label_desc: Use image node_id 2 for calling the KerasNestedFileReader obj's underlying member method code with example usage: obj._find_data(layer_name, var_name) and returns: self, None, name