如何在 ECharts 曲线图中绘制五角星？

option = {  title: {    text: 'Stacked Line'  },  legend: {    data: [      { name: 'Email', icon: 'circle' },      {        name: 'Union Ads',        itemStyle: {          color: 'red'        },        icon: 'path://M 200 200 l-40 100 100 -80 -120 0 100 80 -40 -120 -40 120z'      }    ]  },  xAxis: {    type: 'category',    boundaryGap: false,    data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']  },  yAxis: {    type: 'value'  },  series: [    {      name: 'Email',      type: 'line',      data: [120, 132, 101, 134, 90, 230, 210]    },    {      name: 'Union Ads',      type: 'line',      markPoint: {        data: [          {            type: 'max'          }        ],        symbol:          'path://M 200 200 l-40 100 100 -80 -120 0 100 80 -40 -120 -40 120z',        symbolSize: 30,        symbolOffset: [0, 30],        itemStyle: {          color: 'red'        }      },      data: [220, 182, 191, 234, 290, 330, 310]    }  ]};