How to use the mnelab.dialogs.AnnotationsDialog function in mnelab

def edit_annotations(self):
        fs = self.model.current["data"].info["sfreq"]
        pos = self.model.current["data"].annotations.onset
        pos = (pos * fs).astype(int).tolist()
        dur = self.model.current["data"].annotations.duration
        dur = (dur * fs).astype(int).tolist()
        desc = self.model.current["data"].annotations.description.tolist()
        dialog = AnnotationsDialog(self, pos, dur, desc)
        if dialog.exec_():
            rows = dialog.table.rowCount()
            onset, duration, description = [], [], []
            for i in range(rows):
                data = dialog.table.item(i, 0).data(Qt.DisplayRole)
                onset.append(float(data) / fs)
                data = dialog.table.item(i, 1).data(Qt.DisplayRole)
                duration.append(float(data) / fs)
                data = dialog.table.item(i, 2).data(Qt.DisplayRole)
                description.append(data)
            self.model.set_annotations(onset, duration, description)