How to use the @nivo/sankey.SankeyDefaultProps.labelPosition function in @nivo/sankey

},
    {
        key: 'enableLabels',
        help: 'Enable/disable labels.',
        type: 'boolean',
        required: false,
        defaultValue: defaults.enableLabels,
        controlType: 'switch',
        group: 'Labels',
    },
    {
        key: 'labelPosition',
        help: 'Label position.',
        type: 'string',
        required: false,
        defaultValue: defaults.labelPosition,
        controlType: 'radio',
        group: 'Labels',
        controlOptions: {
            choices: ['inside', 'outside'].map(key => ({
                label: key,
                value: key,
            })),
        },
    },
    {
        key: 'labelPadding',
        help: 'Label padding from node.',
        required: false,
        defaultValue: defaults.labelPadding,
        type: 'number',
        controlType: 'range',