code: def set_shared_states(a, b):
      assert isinstance(a, chainer.Optimizer)
      assert hasattr(
          a, "target"
      ), "Optimizer.setup must be called first"
      for param_name, param in a.target.namedparams():
          ensure_initialized_update_rule(param)
          state = param.update_rule.state
          for state_name, state_val in b[param_name].items():
              s = state[state_name]
              state[state_name] = np.frombuffer(
                  state_val, dtype=s.dtype
              ).reshape(s.shape)
  
imports: import multiprocessing
  import warnings
  import chainer
  import numpy
  import chainerrl
  from chainerrl.misc import random_seed
label_desc: Use image node_id 6 for calling a global function with example usage: set_shared_states(a, b) without return types