How to use the @nivo/sunburst.SunburstDefaultProps.childColor function in @nivo/sunburst

},
    {
        key: 'colors',
        help: 'Defines how to compute node color.',
        required: false,
        defaultValue: defaults.colors,
        controlType: 'ordinalColors',
        type: 'string | Function | string[]',
        group: 'Base',
    },
    {
        key: 'childColor',
        help: 'Defines how to compute child nodes color.',
        type: 'string | object | Function',
        required: false,
        defaultValue: defaults.childColor,
        controlType: 'inheritedColor',
        group: 'Base',
    },
    {
        key: 'borderWidth',
        help: 'Node border width.',
        type: 'number',
        required: false,
        defaultValue: defaults.borderWidth,
        controlType: 'lineWidth',
        group: 'Base',
    },
    {
        key: 'cornerRadius',
        help: 'Round node shape.',
        type: 'number',