def METHOD_NAME(self) -> None:
    """Test child_modules."""
    data = {"parallel": [{"name": "test", "path": "./"}]}
    result = RunwayModuleDefinition.parse_obj(data).child_modules
    assert isinstance(result, list)
    assert len(result) == 1
    assert isinstance(result[0], RunwayModuleDefinition)
    assert result[0].name == data["parallel"][0]["name"]
    assert RunwayModuleDefinition.parse_obj({"path": "./"}).child_modules == []