ToolBox icon 采用path的方式，显示图标为空心的echarts 折线配置项内容和展示

ToolBox icon 采用path的方式，我的svg图片不是空心的，但是用text打开后复制path，现在显示的是空心的图标

      option = {
    title: {
        text: 'Awesome Chart'
    },



    toolbox: {
        feature: {
            dataZoom: {
                yAxisIndex: 'none'
            },
            restore: {
                icon: "path://M15.5,10.625v4.917h-15v-5h2v3h11v-2.917H15.5z M12.218,8.69l-1.414-1.414L8.917,9.163V0.458h-2v8.822,L5.029,7.394L3.615,8.808l4.243,4.242L12.218,8.69z"
            },
            saveAsImage: {
                icon: "path://M12,5.9h2V14H2V5.9h2.1v-2H0V16h16V3.9h-4V5.9z M8.1,12.8l4.1-4.1l-1.4-1.4L9.1,9V0h-2v9L5.4,7.3L4,8.7"
            }
        }
    },
    xAxis: {
        data: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat']
    },
    yAxis: {},
    series: [{
        type: 'line',
        data: [220, 182, 191, 234, 290, 330, 310]
    }]
};