import { ISimpleConfig } from "@golemio/core/dist/helpers/configuration/ISimpleConfig";
import { DataSource } from "@golemio/core/dist/integration-engine";
export declare abstract class AbstractPpasDatasource {
    protected readonly url: string;
    private readonly oauthUrl;
    private readonly clientId;
    private readonly clientSecret;
    protected readonly accessTokenHeader: string;
    private tokenExpiration;
    private authToken;
    protected constructor(config: ISimpleConfig, configPrefix: string);
    protected getDatasource(path: string, schema: object, params?: Record<string, string>): Promise<DataSource>;
    private getToken;
    private refreshToken;
    private getProtocolStrategy;
}