import { FormControl, ValidationErrors } from '@angular/forms';
import { Connector as RestConnector } from '../../Backend/Rest/Connector';
import { Factory as RequestSimpleFactory } from '../../Backend/Rest/Request/Simple/Factory';
import { BaseAbstract } from './BaseAbstract';
import { Observable } from 'rxjs/Observable';
export declare class AvailableEmail extends BaseAbstract {
    private url;
    private method;
    private keyError;
    private requestSimpleFactory;
    private restConnector;
    constructor(url: string, method: string, keyError: string, requestSimpleFactory: RequestSimpleFactory, restConnector: RestConnector);
    protected validate(): (control: FormControl) => Observable<ValidationErrors | null>;
}