How to use the mnelab.io.writers function in mnelab

append = bool(self.model.get_compatibles())
            self.actions["append_data"].setEnabled(
                enabled and append and
                (self.model.current["dtype"] in ("raw", "epochs")))
            self.actions["meta_info"].setEnabled(
                enabled and
                self.model.current["ftype"] in ["XDF", "XDFZ", "XDF.GZ"])
            self.actions["convert_od"].setEnabled(
                    len(mne.pick_types(self.model.current["data"].info,
                        fnirs="fnirs_raw")))
            self.actions["convert_bl"].setEnabled(
                    len(mne.pick_types(self.model.current["data"].info,
                        fnirs="fnirs_od")))
            # disable unsupported exporters for epochs (all must support raw)
            if self.model.current["dtype"] == "epochs":
                for ext, description in writers.items():
                    action = "export_data" + ext.replace(".", "_")
                    if "epoch" in description[2]:
                        self.actions[action].setEnabled(True)
                    else:
                        self.actions[action].setEnabled(False)
        # add to recent files
        if len(self.model) > 0:
            self._add_recent(self.model.current["fname"])