code: def _get_parameter(self, param_name):
      if param_name not in self._parameters:
          raise ValueError("parameter {} is not found.")
      pa = self._parameters[param_name]
      pa_np = np.array(pa.data[:]).reshape(pa.shape.dim[:])
      return pa_np
  
file_path: nnabla/python/src/nnabla/utils/converter/nnablart/resolver.py
imports: from collections import OrderedDict
  import nnabla
  import nnabla.functions
  import numpy
  from nnabla.utils import nnabla_pb2
  from nnabla.utils.save_function import _create_function_nntxt
label_desc: Use image node_id 4 for calling the Resolver obj's underlying member method code with example usage: obj._get_parameter(param_name) and returns: pa_np