def METHOD_NAME(self) -> None:
    # no name, the type will be used. in name
    transformers_data: List[Any] = [{"type": MOCK, "items": {"v0": "v0_1"}}]
    transformers = schema.load_by_type_many(schema.Transformer, transformers_data)
    runbook_builder = self._generate_runbook_builder(transformers)
    result = transformer._run_transformers(runbook_builder)
    self._validate_variables(
        {
            "v0": "original",
            "va": "original",
            "mock_v0": "v0_1 processed",
        },
        result,
    )