code: def test_acceptance_empty(validator):
      val = [{}]
      res = validator.validate_coerce(val)
      res_present = validator.present(res)
  
      assert isinstance(res, list)
      assert isinstance(res_present, tuple)
      assert isinstance(res_present[0], Image)
      assert res_present[0].opacity is None
      assert res_present[0].sizex is None
      assert res_present[0].x is None
  
file_path: plotly.py/packages/python/plotly/_plotly_utils/tests/validators/test_compoundarray_validator.py
imports: import pytest
  from _plotly_utils.basevalidators import CompoundArrayValidator
  from plotly.graph_objs.layout import Image
label_desc: Use image node_id 3 for calling a global function with example usage: test_acceptance_empty(validator) without return types