import MT5WebClient from '.';
import { MT } from './types';
export declare class GroupService {
    #private;
    private static instances;
    static getInstance(name: string, pool: MT5WebClient): GroupService;
    Group: string;
    Symbols: Record<string, MT.SymbolInfo>;
    Prices: Record<string, MT.SymbolStat>;
    getSymbol: (symbol: string) => Promise<void | {
        answer: MT.SymbolInfo;
        trans_id?: string;
        retcode: string;
    }>;
    private constructor();
    getInfo(): Promise<MT.Group>;
    bootstrap: () => Promise<this>;
}