import { DataBaseModelInterface } from '@solcre-org/core';
export declare class AnnouncementModel implements DataBaseModelInterface {
    id?: number;
    title?: string;
    description?: string;
    content?: string;
    startDate?: string | null;
    endDate?: string | null;
    addedAt?: string | null;
    frame?: number | null;
    files?: any[];
    constructor(id?: number, title?: string, description?: string, content?: string, startDate?: string | null, endDate?: string | null, addedAt?: string | null, frame?: number | null, files?: any[]);
    fromJSON(json: any): void;
    toJSON(): any;
    getId(): number;
    getReference(): string;
}