import PortalClient, { BodyEncoding, HttpMethod, IServiceCall, IServiceParameters, ResponseEncoding } from "../index";
export type IExtensionConstructor<T extends IExtension> = new (client: PortalClient) => T;
export interface IExtension {
}
export default abstract class Extension implements IExtension {
    protected abstract readonly extensionName: string;
    protected client: PortalClient;
    constructor(client: PortalClient);
    protected call<T>(methodName: string | null, parameters?: IServiceParameters | null, method?: HttpMethod, requiresToken?: string | boolean, bodyEncoding?: BodyEncoding, responseEncoding?: ResponseEncoding, headers?: Record<string, string>, protocolVersion?: string): IServiceCall<T>;
    protected onSuccess<T>(call: IServiceCall<T>, onSuccess: (value: T) => void): IServiceCall<T>;
    protected clearAccessToken(): void;
    protected setAccessToken(token: string | null, authenticationType: string | null): void;
    static add<T extends IExtension>(extensionConstructor: IExtensionConstructor<T>, extensionName: string): void;
}