How to use the @nivo/circle-packing.BubbleDefaultProps.borderColor function in @nivo/circle-packing

type: 'number',
        required: false,
        defaultValue: defaults.borderWidth,
        controlType: 'lineWidth',
        group: 'Style',
    },
    {
        key: 'borderColor',
        help: 'Method to compute border color.',
        description: `
            how to compute border color,
            [see dedicated documentation](self:/guides/colors).
        `,
        type: 'string | object | Function',
        required: false,
        defaultValue: defaults.borderColor,
        controlType: 'inheritedColor',
        group: 'Style',
    },
    ...defsProperties('Style', ['svg']),
    {
        key: 'enableLabel',
        help: 'Enable/disable labels.',
        type: 'boolean',
        required: false,
        defaultValue: defaults.enableLabel,
        controlType: 'switch',
        group: 'Labels',
    },
    {
        key: 'label',
        help: 'Label accessor.',

max: 10,
        },
    },
    {
        key: 'borderColor',
        scopes: '*',
        description: (
            <span>
                how to compute border color,{' '}
                see dedicated documentation.
            </span>
        ),
        help: 'Method to compute border color.',
        type: '{string|Function}',
        required: false,
        default: defaults.borderColor,
        controlType: 'color',
        controlGroup: 'Style',
        controlOptions: {
            withCustomColor: true,
        },
    },
    ...defsProperties(['Bubble']),
    ...marginProperties,
    {
        key: 'enableLabel',
        scopes: '*',
        description: 'Enable/disable labels.',
        type: '{boolean}',
        required: false,
        default: defaults.enableLabel,
        controlType: 'switch',