code: def test_multi_model_load_missing_dims():
      model = chain(Maxout(5, 10, nP=2), Maxout(2, 3)).initialize()
      b = model.layers[0].get_param("b")
      b += 1
      b = model.layers[1].get_param("b")
      b += 2
      data = model.to_bytes()
  
      model2 = chain(Maxout(5, nP=None), Maxout(nP=None))
      model2 = model2.from_bytes(data)
      assert model2.layers[0].get_param("b")[0, 0] == 1
      assert model2.layers[1].get_param("b")[0, 0] == 2
  
imports: import pytest
  import srsly
  from thinc.api import Linear, Maxout, Model, Shim, chain, deserialize_attr, serialize_attr, with_array
label_desc: Use image node_id 7 for calling a global function with example usage: test_multi_model_load_missing_dims() without return types