import { Observable } from 'rxjs';
import { ContractBillingApiService } from './_internal/contract-billing.api.service';
import { CustomerInterface, GetOptionsResponseInterface } from './_internal/interfaces';
import * as i0 from "@angular/core";
export declare class ContractBillingService {
    private readonly api;
    constructor(api: ContractBillingApiService);
    createCustomer(customer: CustomerInterface): Observable<string>;
    getOptions(): Observable<GetOptionsResponseInterface>;
    static ɵfac: i0.ɵɵFactoryDef<ContractBillingService, never>;
    static ɵprov: i0.ɵɵInjectableDef<ContractBillingService>;
}