How to use the @nivo/pie.PieDefaultProps.borderWidth function in @nivo/pie

description: `
            You can use \`defs\` and \`fill\` properties
            to use patterns, see
            [dedicated guide](self:/guides/patterns)
            for further information.
        `,
        type: 'boolean',
        controlType: 'switch',
        group: 'Style',
    },
    {
        key: 'borderWidth',
        help: 'Slices border width.',
        type: 'number',
        required: false,
        defaultValue: defaults.borderWidth,
        controlType: 'lineWidth',
        group: 'Style',
    },
    {
        key: 'borderColor',
        help: 'Method to compute border color.',
        type: 'string | object | Function',
        required: false,
        defaultValue: defaults.borderColor,
        controlType: 'inheritedColor',
        group: 'Style',
    },
    {
        key: 'enableRadialLabels',
        help: 'Enable/disable radial labels.',
        type: 'boolean',