How to use the @supermap/iclient-common.CommonUtil.cloneObject function in @supermap/iclient-common

//将标签像素范围转为地理范围
                var geoBs = [];
                for (let j = 0; j < quadlen - 1; j++) {
                    geoBs.push(map.unproject(boundsQuad[j]));
                }

                //屏蔽有偏移性质的style属性,偏移量在算bounds时已经加入计算
                var leftBottom = geoBs[3];
                var rightTop = geoBs[1];
                var bounds = new Bounds(leftBottom.lng, leftBottom.lat, rightTop.lng, rightTop.lat);
                var center = bounds.getCenterLonLat();
                var label = new GeoText(center.lon, center.lat, fi.attributes[this.themeField]);
                label.calculateBounds();
                styTmp = Util.cloneObject(fi.style);
                feaSty = Util.cloneObject(Util.copyAttributes(styTmp, styleTemp));
                fea = new FeatureVector(label, fi.attributes, feaSty);
                //赋予id
                fea.id = fi.id;
                fea.fid = fi.fid;
                feas.push(fea);
            }
        }

        //返回最终要绘制的标签要素
        return feas;
    }

}
                }
                //压盖处理 -end

                //将标签像素范围转为地理范围
                var geoBs = [];
                for (let j = 0; j < quadlen - 1; j++) {
                    geoBs.push(map.getCoordinateFromPixel([boundsQuad[j].x, boundsQuad[j].y]));
                }

                //屏蔽有偏移性质的style属性,偏移量在算bounds时已经加入计算
                var bounds = new Bounds(geoBs[3][0], geoBs[3][1], geoBs[1][0], [geoBs[1][1]]);
                var center = bounds.getCenterLonLat();
                var label = new GeoText(center.lon, center.lat, fi.attributes[this.themeField]);
                label.calculateBounds();
                styTmp = CommonUtil.cloneObject(fi.style);
                feaSty = CommonUtil.cloneObject(CommonUtil.copyAttributes(styTmp, styleTemp));
                fea = new FeatureVector(label, fi.attributes, feaSty);
                //赋予id
                fea.id = fi.id;
                fea.fid = fi.fid;
                feas.push(fea);
            }
        }

        //返回最终要绘制的标签要素
        return feas;
    }

calculateLabelBounds2(feature, loc) {
        var labB, left, bottom, top, right;
        var labelSize = feature.geometry.bsInfo;
        var style = feature.style;
        var locationPx = CommonUtil.cloneObject(loc);

        //处理文字对齐
        if (style.labelAlign && style.labelAlign !== "cm") {
            switch (style.labelAlign) {
                case "lt":
                    locationPx.x += labelSize.w / 2;
                    locationPx.y += labelSize.h / 2;
                    break;
                case "lm":
                    locationPx.x += labelSize.w / 2;
                    break;
                case "lb":
                    locationPx.x += labelSize.w / 2;
                    locationPx.y -= labelSize.h / 2;
                    break;
                case "ct":

//背景（事件）-start

                //将标签像素范围转为地理范围
                var geoBs = [];
                for (let j = 0; j < quadlen - 1; j++) {
                    geoBs.push(map.containerPointToLatLng(boundsQuad[j]));
                }

                //屏蔽有偏移性质的style属性,偏移量在算bounds时已经加入计算
                var leftBottom = geoBs[3];
                var rightTop = geoBs[1];
                var bounds = new Bounds(leftBottom.lng, leftBottom.lat, rightTop.lng, rightTop.lat);
                var center = bounds.getCenterLonLat();
                var label = new GeoText(center.lon, center.lat, fi.attributes[this.themeField]);
                label.calculateBounds();
                styTmp = Util.cloneObject(fi.style);
                feaSty = Util.cloneObject(Util.copyAttributes(styTmp, styleTemp));
                fea = new GeometryVector(label, fi.attributes, feaSty);
                //赋予id
                fea.id = fi.id;
                fea.fid = fi.fid;
                feas.push(fea);
            }
        }

        //返回最终要绘制的标签要素
        return feas;
    },

calculateLabelBounds2(feature, loc) {
        var labB, left, bottom, top, right;
        var labelSize = feature.geometry.bsInfo;
        var style = feature.style;
        var locationPx = Util.cloneObject(loc);

        //处理文字对齐
        if (style.labelAlign && style.labelAlign !== "cm") {
            switch (style.labelAlign) {
                case "lt":
                    locationPx.x += labelSize.w / 2;
                    locationPx.y += labelSize.h / 2;
                    break;
                case "lm":
                    locationPx.x += labelSize.w / 2;
                    break;
                case "lb":
                    locationPx.x += labelSize.w / 2;
                    locationPx.y -= labelSize.h / 2;
                    break;
                case "ct":

//背景（事件）-start

                //将标签像素范围转为地理范围
                var geoBs = [];
                for (let j = 0; j < quadlen - 1; j++) {
                    geoBs.push(map.unproject(boundsQuad[j]));
                }

                //屏蔽有偏移性质的style属性,偏移量在算bounds时已经加入计算
                var leftBottom = geoBs[3];
                var rightTop = geoBs[1];
                var bounds = new Bounds(leftBottom.lng, leftBottom.lat, rightTop.lng, rightTop.lat);
                var center = bounds.getCenterLonLat();
                var label = new GeoText(center.lon, center.lat, fi.attributes[this.themeField]);
                label.calculateBounds();
                styTmp = Util.cloneObject(fi.style);
                feaSty = Util.cloneObject(Util.copyAttributes(styTmp, styleTemp));
                fea = new FeatureVector(label, fi.attributes, feaSty);
                //赋予id
                fea.id = fi.id;
                fea.fid = fi.fid;
                feas.push(fea);
            }
        }

        //返回最终要绘制的标签要素
        return feas;
    }

}
                //压盖处理 -end

                //将标签像素范围转为地理范围
                var geoBs = [];
                for (let j = 0; j < quadlen - 1; j++) {
                    geoBs.push(map.getCoordinateFromPixel([boundsQuad[j].x, boundsQuad[j].y]));
                }

                //屏蔽有偏移性质的style属性,偏移量在算bounds时已经加入计算
                var bounds = new Bounds(geoBs[3][0], geoBs[3][1], geoBs[1][0], [geoBs[1][1]]);
                var center = bounds.getCenterLonLat();
                var label = new GeoText(center.lon, center.lat, fi.attributes[this.themeField]);
                label.calculateBounds();
                styTmp = CommonUtil.cloneObject(fi.style);
                feaSty = CommonUtil.cloneObject(CommonUtil.copyAttributes(styTmp, styleTemp));
                fea = new FeatureVector(label, fi.attributes, feaSty);
                //赋予id
                fea.id = fi.id;
                fea.fid = fi.fid;
                feas.push(fea);
            }
        }

        //返回最终要绘制的标签要素
        return feas;
    }

calculateLabelBounds2: function (feature, loc) {
        var labB, left, bottom, top, right;
        var labelSize = feature.geometry.bsInfo;
        var style = feature.style;
        var locationPx = Util.cloneObject(loc);

        //处理文字对齐
        if (style.labelAlign && style.labelAlign !== "cm") {
            switch (style.labelAlign) {
                case "lt":
                    locationPx.x += labelSize.w / 2;
                    locationPx.y += labelSize.h / 2;
                    break;
                case "lm":
                    locationPx.x += labelSize.w / 2;
                    break;
                case "lb":
                    locationPx.x += labelSize.w / 2;
                    locationPx.y -= labelSize.h / 2;
                    break;
                case "ct":