code: def find_parameter_variable(self, network):
      var_list = []
      for var in network.variable:
          if var.type == "Parameter" and var.initializer:
              var_list.append(var)
      return var_list
  
file_path: nnabla/python/src/nnabla/utils/converter/nnabla/importer.py
imports: import os
  import shutil
  import tempfile
  import zipfile
  import google.protobuf.text_format
  from nnabla.utils import nnabla_pb2
  from .None import expander
label_desc: Use image node_id 5 for calling the NnpImporter obj's underlying member method code with example usage: obj.find_parameter_variable(network) and returns: var_list