import { Session } from './session/session';
export declare type ExtraProperties<T> = {
    [P in keyof T]?: any;
};
/**
 * Entidade do sistema com metadados.
 */
export declare class Entity<T> {
    _id: string;
    _created_at: string;
    _updated_at: string;
    _id_cliente: string;
    _id_empresa: string;
    _sync: boolean;
    _sync_local: boolean;
    _last_sync: string;
    _first_sync: string;
    _deleted: boolean;
    extra_properties?: {
        [property: string]: ExtraProperties<T>;
    };
    additional_properties?: {
        [property: string]: ExtraProperties<T>;
    };
    constructor(json?: any, generateId?: boolean, overwriteFromExtraProperties?: boolean);
    getId(): string;
    update(): this;
    sign(session: Session): this;
    toJson(): any;
}