import { HttpEvent, HttpRequest } from '@angular/common/http';
import { Observable } from 'rxjs';
import { RESTClientBase } from '../../misc/classes/restClientBase';
import * as i0 from "@angular/core";
/**
 * Angular RESTClient base class.
 */
export declare abstract class RESTClient extends RESTClientBase {
    /**
     * @inheritdoc
     */
    protected getBaseUrl(): string;
    /**
     * @inheritdoc
     */
    protected getDefaultHeaders(): string | {
        [name: string]: string | string[];
    };
    /**
     * @inheritdoc
     */
    protected requestInterceptor(req: HttpRequest<unknown>): HttpRequest<unknown>;
    /**
     * @inheritdoc
     */
    protected responseInterceptor<TBody = unknown>(res: Observable<HttpEvent<TBody>>): Observable<HttpEvent<unknown>>;
    static ɵfac: i0.ɵɵFactoryDeclaration<RESTClient, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<RESTClient>;
}
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