How to use the @hpcc-js/api.I2DAggrChart.prototype function in @hpcc-js/api

console.log("Click:  " + JSON.stringify(row) + ", " + column + ", " + selected);
    }

    //  ITooltip
    tooltip;
    tooltipHTML: (_) => string;
    tooltipFormat: (_) => string;
    tooltipValueFormat: (_) => string;
    tooltipValueFormat_default: (_) => string;

    paletteID: { (): string; (_: string): HexBin; };
    useClonedPalette: { (): boolean; (_: boolean): HexBin; };
    binSize: { (): number; (_: number): HexBin; };
}
HexBin.prototype._class += " chart_HexBin";
HexBin.prototype.implements(I2DAggrChart.prototype);
HexBin.prototype.implements(ITooltip.prototype);

HexBin.prototype.publish("paletteID", "Blues", "set", "Color palette for this widget", HexBin.prototype._palette.switch(), { tags: ["Basic", "Shared"] });
HexBin.prototype.publish("useClonedPalette", false, "boolean", "Enable or disable using a cloned palette", null, { tags: ["Intermediate", "Shared"] });
HexBin.prototype.publish("binSize", 20, "number", "Bin radius", null, { range: { min: 1, max: 300, step: 1 } });