Saving/loading

def load_method_file(path: str | Path, as_method: bool = False) -> BaseTechnique | Method:
    """Load a method file (.psmethod).

    Parameters
    ----------
    path : Path | str
        Path to method file
    as_method : bool
        If True, load as method wrapper object

    Returns
    -------
    method : Parameters
        Return method parameters
    """
    path = Path(path)

    with stream_reader(str(path)) as stream:
        if path.suffix == PalmSens.DataFiles.MethodFile2.FileExtension:
            psmethod = PalmSens.DataFiles.MethodFile2.FromStream(stream)
        else:
            psmethod = PalmSens.DataFiles.MethodFile.FromStream(stream, str(path))

    psmethod.MethodFilename = str(path.absolute())

    method = Method(psmethod=psmethod)

    if as_method:
        return method
    else:
        return method.to_settings()

def load_session_file(
    path: str | Path,
) -> list[Measurement]:
    """Load a session file (.pssession).

    Parameters
    ----------
    path : Path | str
        Path to session file

    Returns
    -------
    measurements : list[Measurement]
        Return list of measurements
    """
    path = Path(path)

    session = PalmSens.Data.SessionManager()

    with stream_reader(str(path)) as stream:
        session.Load(stream.BaseStream, str(path))

    session.MethodForEditor.MethodFilename = str(path.absolute())

    for psmeasurement in session:
        psmeasurement.Method.MethodFilename = str(path.absolute())

    return [Measurement(psmeasurement=m) for m in session]

def save_method_file(path: str | Path, method: Method | BaseTechnique):
    """Load a method file (.psmethod).

    Parameters
    ----------
    path : Path | str
        Path to save the method file
    method : Method
        Method to save
    """
    from . import __sdk_version__

    if isinstance(method, BaseTechnique):
        psmethod = method._to_psmethod()
    elif isinstance(method, Method):
        psmethod = method.psmethod
    else:
        raise ValueError(f'Unknown data type: {type(method)}')

    path = Path(path)

    with stream_writer(str(path), False, Encoding.Unicode) as stream:
        PalmSens.DataFiles.MethodFile2.Save(
            psmethod, stream.BaseStream, str(path), True, __sdk_version__
        )

def save_session_file(path: str | Path, measurements: list[Measurement]):
    """Load a session file (.pssession).

    Parameters
    ----------
    path : Path | str
        Path to save the session file
    measurements : list[Measurement]
        List of measurements to save
    """
    path = Path(path)

    if any((measurement is None) for measurement in measurements):
        raise ValueError('cannot save null measurement')

    session = PalmSens.Data.SessionManager()
    session.MethodForEditor = measurements[0]._psmeasurement.Method
    session.MethodForEditor.MethodFilename = str(path.absolute())

    for measurement in measurements:
        session.AddMeasurement(measurement._psmeasurement)

    with stream_writer(str(path), False, Encoding.Unicode) as stream:
        session.Save(stream.BaseStream, str(path))