export declare const OptionStyle: {
    readonly OPTION_STYLE_UNSPECIFIED: "OPTION_STYLE_UNSPECIFIED";
    readonly OPTION_STYLE_AMERICAN: "OPTION_STYLE_AMERICAN";
    readonly OPTION_STYLE_EUROPEAN: "OPTION_STYLE_EUROPEAN";
};
export type OptionStyle = 'OPTION_STYLE_UNSPECIFIED' | 0 | 'OPTION_STYLE_AMERICAN' | 1 | 'OPTION_STYLE_EUROPEAN' | 2;
export type OptionStyle__Output = typeof OptionStyle[keyof typeof OptionStyle];