export declare class BooleanFilterHelper {
    FILTER_NONE: string;
    FILTER_TRUE: string;
    FILTER_FALSE: string;
    private FILTER_NAMES;
    private FILTER_ICONS;
    FILTER_VALUES: Array<string>;
    setFilterNames(filterNames: Array<string>): void;
    getFilterName(filterIndex: number): string;
    getFilterNone(): string;
    setFilterIcons(filterIcons: Array<string>): void;
    getFilterIcon(iconIndex: number): string;
    getFilterValue(valueIndex: number): string;
    getFilterValueIndex(filterValue: string): number;
    setupContentGui(groupName: string): string;
    getValue(selectedIndex: number): boolean;
    getModelAsString?(selectedIndex: number): string;
    setupContentGuiSideFilter(): string;
}
