关系图怎么有多个关系指向同一个圆echarts graph配置项内容和展示

就是小明有个投资人指向公司，还有个董事长也是指向公司，就是两个箭头同时指向公司

      option = {
    itemStyle: {
        shadowColor: 'rgba(0, 0, 0, 0.5)',
        shadowBlur: 10
    },
    tooltip: {},
    legend: [{
        formatter: function(name) {
            return echarts.format.truncateText(name, 200, '12px', '…');
        },
        tooltip: {
            show: true
        },
        selectedMode: 'false',
        bottom: 20,
    }],
    animationDuration: 3000,
    animationEasingUpdate: 'quinticInOut',
    series: [{
        type: 'graph',
        layout: 'none',
        force: {
            //repulsion: 1000
        },
        legendHoverLink: true,
        edgeSymbol: ['circle', 'arrow'],
        edgeSymbolSize: [2, 15],
        edgeLabel: {
            show: false,
            normal: {
                show: true,
                position: 'middle',
                textStyle: {
                    fontSize: 12
                },
                formatter: "{c}"
            }
        },
        itemStyle: {
            shadowColor: 'rgba(0, 0, 0, 0.5)',
            shadowBlur: 10
        },
        data: [{
            name: "公司",
            value: "100000",
            symbolSize: 110,
            draggable: false,
            fixed: true,

            x: 50,
            y: 50,
        }, {
            name: "小明",
            value: "100000",
            symbolSize: 80,
            draggable: false,
            fixed: true,
            x: 50,
            y: 35
        }, {
            name: "小明-1",
            value: "100000",
            symbolSize: 80,
            draggable: false,
            fixed: true,
            x: 50,
            y: 35
        }, {
            name: "小明-2",
            value: "100000",
            symbolSize: 80,
            draggable: false,
            fixed: true,
            x: 50,
            y: 35
        }],

        links: [{
            source: "小明",
            value: "投资人",
            target: "公司"
        }, {
            source: "小明",
            value: "董事长",
            target: "公司"
        }, {
            source: "小明-1",
            value: "董事长",
            target: "公司",
            lineStyle: {
                normal: {
                    width: 2,
                    curveness: 0.1
                }
            }
        }, {
            source: "小明-2",
            value: "董事长",
            target: "公司",
            lineStyle: {
                normal: {
                    width: 2,
                    curveness: -0.1
                }
            }
        }],
        focusNodeAdjacency: true,
        roam: true,
        //圆形上面的文字	
        label: {
            normal: {
                position: "inside",
                show: true,
                textStyle: {
                    fontSize: 12
                }
            }
        },
        lineStyle: {
            normal: {
                opacity: 0.9,
                width: 2,
                curveness: 0,
                color: '#000',

            }
        }
    }]
};