import { CsContentGetQuestionSetResponse, CsContentService, CsContentGetQuestionListResponse, CsContentGetQuestionSetHierarchyResponse } from '../interface';
import { CsContentServiceConfig } from '../../..';
import { Observable } from 'rxjs';
import { CsHttpService } from '../../../core/http-service/interface';
export declare class ContentServiceImpl implements CsContentService {
    private httpService;
    private hierarchyApiPath;
    private questionListApiPath;
    constructor(httpService: CsHttpService, hierarchyApiPath: string, questionListApiPath: string);
    getQuestionSetHierarchy(contentId: string, config?: CsContentServiceConfig): Observable<CsContentGetQuestionSetHierarchyResponse>;
    getQuestionSetRead(contentId: string, params?: any, config?: CsContentServiceConfig): Observable<CsContentGetQuestionSetResponse>;
    getQuestionList(contentIds: string[], config?: CsContentServiceConfig): Observable<CsContentGetQuestionListResponse>;
}