code: def model(model1, model2):
      return chain(model1, model2).initialize()
  
imports: from functools import partial
  import numpy
  import pytest
  from numpy.testing import assert_allclose
  from thinc.api import Linear, NumpyOps, Relu, chain
label_desc: Use image node_id 9 for calling a global function with example usage: model(model1, model2) and returns: chain