How to use the reprounzip-qt.reprounzip_qt.gui.run.VagrantOptions function in reprounzip-qt

file_status = self.files_status[selected]
        record_usage(file_reset=True)
        handle_error(self, reprounzip.upload(
            self.directory, file_status.name, None,
            unpacker=self.unpacker, root=self.root))
        self._file_changed()


class RunTab(QtWidgets.QWidget):
    """The main window, that allows you to run/change an unpacked experiment.
    """
    UNPACKERS = [
        ('directory', DirectoryOptions),
        ('chroot', ChrootOptions),
        ('docker', DockerOptions),
        ('vagrant', VagrantOptions),
    ]

    directory = None
    unpacker = None

    def __init__(self, unpacked_directory='', **kwargs):
        super(RunTab, self).__init__(**kwargs)

        layout = QtWidgets.QGridLayout()
        layout.addWidget(QtWidgets.QLabel("Experiment directory:"), 0, 0)
        self.directory_widget = QtWidgets.QLineEdit(unpacked_directory)
        self.directory_widget.editingFinished.connect(self._directory_changed)
        layout.addWidget(self.directory_widget, 0, 1)
        browse = QtWidgets.QPushButton("Browse")
        browse.clicked.connect(self._browse)
        layout.addWidget(browse, 0, 2)

def options(self):
        options = super(VagrantOptions, self).options()

        ports = parse_ports(self.ports.text(), self)
        if ports is None:
            return None
        for host, container, proto in parse_ports(self.ports.text(), self):
            options['args'].append('--expose-port=%s:%s/%s' %
                                   (host, container, proto))
        record_usage(vagrant_run_port_fwd=bool(ports))

        return options