code: def finalize(self, params, prev, curr):
      assert set(prev.keys()) == set(curr.keys())
      for key in prev:
          assert prev[key].shape == curr[key].shape
      I = curr["I"]
      I_mean = I.mean(dim=[-1, -2], keepdim=True).expand_as(I)
      with self.region_plate, self.time_plate:
          pyro.sample("likelihood", dist.Normal(I_mean, 1.0), obs=I)
  
imports: import logging
  import math
  import pytest
  import torch
  import pyro
  import pyro.distributions
  from pyro.contrib.epidemiology.models import HeterogeneousRegionalSIRModel, HeterogeneousSIRModel, OverdispersedSEIRModel, OverdispersedSIRModel, RegionalSIRModel, SimpleSEIRDModel, SimpleSEIRModel, SimpleSIRModel, SparseSIRModel, SuperspreadingSEIRModel, SuperspreadingSIRModel, UnknownStartSIRModel
  from tests.common import xfail_param
label_desc: Use image node_id 1 for calling the RegionalSIRModelWithFinalize obj's underlying member method code with example usage: obj.finalize(params, prev, curr) without return types