code: def test_correct_schema(self, schema):
      new_schema = validate_schema(
          nodes=list(schema.keys()), schema=schema
      )
      assert new_schema == schema
  
imports: from collections import OrderedDict
  import pytest
  from causalnex.structure import StructureModel
  from causalnex.structure.categorical_variable_mapper import VariableFeatureMapper, validate_schema
label_desc: Use image node_id 5 for calling the TestValidateSchema obj's underlying member method code with example usage: obj.test_correct_schema(schema) without return types