如何在VueJS项目中使用带有vue2-leaflet的leaflet-semicircle？

我使用Vue2Leaflet和Leaflet-semicircle。我在使用Vue2Leaflet时没有问题，但是我不知道如何在我的VueJS项目中使用Leaflet-semicircle。

<script>
    import { latLng } from "leaflet";
    import { LMap, LTileLayer, LMarker, LCircleMarker, LPopup, LTooltip } from "vue2-leaflet";
    import { mapGetters } from 'vuex';
    import moment from 'moment';
    import 'leaflet-semicircle';

    export default {
        name: 'Map',
        components: { LMap, LTileLayer, LMarker, LCircleMarker, LPopup, LTooltip, LSemicircle },
        data() {
            return {
            map: null,
            zoom: 12,
            center: latLng(53.88694, 27.554572),
            url: 'http://192.168.1.1/osm-tiles/{z}/{x}/{y}.png',
            withPopup: latLng(53.88694, 27.524572),
            withTooltip: latLng(53.88694, 27.565572),
            currentZoom: 12,
            currentCenter: latLng(53.88694, 27.554572),
            showParagraph: false,
            mapOptions: {
                zoomSnap: 0.5
            },
            showMap: true
            };
        },
        mounted() {
            this.map = this.$refs.map.mapObject;
            this.$nextTick(() => {
                this.map = this.$refs.map.mapObject;
            });                  
        },
        updated() {
            L.semiCircle(latLng(53.88694, 27.554572), { // not working
                radius: 5000,
                startAngle: 45,
                stopAngle: 360
            }).addTo(this.map);
        },
        computed: {
            ...mapGetters('targetControl', { events: 'getEvents'}),
        },
        ...
        ...
    }
</script>