import { Environment } from '../ngx-services.models';
import { HttpClient } from '@angular/common/http';
import { Observable } from 'rxjs';
import { IncomeTypesOut } from './models/api-billing.types';
import * as i0 from "@angular/core";
export declare class ApiBillingDOService {
    private environments;
    private http;
    constructor(environments: Environment, http: HttpClient);
    /**
     * Retrieves the URL for the shipments API from the environment configurations.
     *
     * @return {string} The URL of the shipments API.
     */
    get url(): string;
    /**
     * Retrieves a list of income types
     *
     * @return {Observable<ApiSuccess<IncomeTypesOut>>} An observable that emits the income types data.
     */
    getIncomeTypes(): Observable<IncomeTypesOut>;
    static ɵfac: i0.ɵɵFactoryDeclaration<ApiBillingDOService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<ApiBillingDOService>;
}