code: def set_parameters(self, params):
      if not hasattr(self, "params"):
          self.params = OrderedDict()
      for key, param in iteritems(params):
          param = param.d.copy()
          if key in self.params:
              continue
          self.params[key] = param
          self._set_state_impl(key, param)
  
imports: from six import iteritems
  import nnabla
  import nnabla.solvers
  from nnabla.testing import assert_allclose
  import numpy
  from collections import OrderedDict
  import os
label_desc: Use image node_id 2 for calling the RefSolver obj's underlying member method code with example usage: obj.set_parameters(params) without return types