def METHOD_NAME(self):
    with open(f"{TEST_FILES_DIR}/transformations.json") as file:
        dct = json.load(file)
    dct["other_parameters"] = {"tags": ["test"]}
    ts = TransformedStructure.from_dict(dct)
    ts.other_parameters["author"] = "Will"
    ts.append_transformation(SubstitutionTransformation({"Fe": "Mn"}))
    assert ts.final_structure.composition.reduced_formula == "MnPO4"
    assert ts.other_parameters == {"author": "Will", "tags": ["test"]}