code: def test_bind_plus():
      with Model.define_operators({"+": lambda a, b: (a.name, b.name)}):
          m = create_model(name="a") + create_model(name="b")
          assert m == ("a", "b")
  
imports: import threading
  import time
  from collections import Counter
  import numpy
  import pytest
  from thinc.api import Adam, CupyOps, Dropout, Linear, Model, Relu, Shim, Softmax, chain, change_attr_values, concatenate, set_dropout_rate, use_ops, with_debug, wrap_model_recursive
  from thinc.compat import has_cupy_gpu
  from ..util import make_tempdir
label_desc: Use image node_id 18 for calling a global function with example usage: test_bind_plus() without return types