How to use the oommfc.oommf.oommf.TclOOMMFRunner function in oommfc

# Check for the OOMMFTCL environment variable pointing to oommf.tcl.
    oommf_tcl = os.environ.get(envvar, None)
    if oommf_tcl is not None:
        cmd = ['tclsh', oommf_tcl, 'boxsi',
               '+fg', '+version', '-exitondone', '1']
        try:
            res = sp.run(cmd, stdout=sp.PIPE, stderr=sp.PIPE)
        except FileNotFoundError:
            log.warning('oommf.tcl was not found.')
        else:
            if res.returncode:
                log.warning('OOMMFTCL is set, but OOMMF could not be run.\n'
                            f'stdout:\n{res.stdout}\n'
                            f'stderr:\n{res.stderr}')
            else:
                _cached_oommf_runner = TclOOMMFRunner(oommf_tcl)
                return _cached_oommf_runner

    # OOMMF is installed via conda and oommf.tcl is in opt/oommf (Windows).
    # This would probably also work on MacOS/Linux, but on these operating
    # systems, when installed via conda, we use 'oommf' executable.
    if sys.platform == 'win32' and \
       os.path.isdir(os.path.join(sys.prefix, 'conda-meta')):
        oommf_tcl = os.path.join(sys.prefix, 'opt', 'oommf', 'oommf.tcl')
        if os.path.isfile(oommf_tcl):
            _cached_oommf_runner = TclOOMMFRunner(oommf_tcl)
            return _cached_oommf_runner

    # OOMMF available as an executable - in a conda env on Mac/Linux, or oommf
    # installed separately.
    oommf_exe = shutil.which(oommf_exe)
    if oommf_exe:

if res.returncode:
                log.warning('OOMMFTCL is set, but OOMMF could not be run.\n'
                            f'stdout:\n{res.stdout}\n'
                            f'stderr:\n{res.stderr}')
            else:
                _cached_oommf_runner = TclOOMMFRunner(oommf_tcl)
                return _cached_oommf_runner

    # OOMMF is installed via conda and oommf.tcl is in opt/oommf (Windows).
    # This would probably also work on MacOS/Linux, but on these operating
    # systems, when installed via conda, we use 'oommf' executable.
    if sys.platform == 'win32' and \
       os.path.isdir(os.path.join(sys.prefix, 'conda-meta')):
        oommf_tcl = os.path.join(sys.prefix, 'opt', 'oommf', 'oommf.tcl')
        if os.path.isfile(oommf_tcl):
            _cached_oommf_runner = TclOOMMFRunner(oommf_tcl)
            return _cached_oommf_runner

    # OOMMF available as an executable - in a conda env on Mac/Linux, or oommf
    # installed separately.
    oommf_exe = shutil.which(oommf_exe)
    if oommf_exe:
        _cached_oommf_runner = ExeOOMMFRunner(oommf_exe)
        return _cached_oommf_runner

    # Check for docker to run OOMMF in a docker image.
    cmd = [docker_exe, 'images']
    try:
        res = sp.run(cmd, stdout=sp.PIPE, stderr=sp.PIPE)
    except FileNotFoundError:
        log.warning('Docker was not found.')
    else: